diff --git a/AFNetworking/AFHTTPClient.h b/AFNetworking/AFHTTPClient.h
index e7083f5..3826b6f 100644
--- a/AFNetworking/AFHTTPClient.h
+++ b/AFNetworking/AFHTTPClient.h
@@ -118,7 +118,7 @@ typedef enum {
 @property (nonatomic, assign) NSStringEncoding stringEncoding;
 
 /**
- The `AFHTTPClientParameterEncoding` value corresponding to how parameters are encoded into a request body. This is `AFFormURLParameterEncoding` by default.
+ The `AFHTTPClientParameterEncoding` value corresponding to how parameters are encoded into a request body for request methods other than `GET`, `HEAD` or `DELETE`. This is `AFFormURLParameterEncoding` by default.
 
  @warning Some nested parameter structures, such as a keyed array of hashes containing inconsistent keys (i.e. `@{@"": @[@{@"a" : @(1)}, @{@"b" : @(2)}]}`), cannot be unambiguously represented in query strings. It is strongly recommended that an unambiguous encoding, such as `AFJSONParameterEncoding`, is used when posting complicated or nondeterministic parameter structures.
  */
diff --git a/AFNetworking/AFHTTPClient.m b/AFNetworking/AFHTTPClient.m
index 5ead060..303ff89 100644
--- a/AFNetworking/AFHTTPClient.m
+++ b/AFNetworking/AFHTTPClient.m
@@ -254,15 +254,24 @@ NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value) {
     }];
     [self setDefaultHeader:@"Accept-Language" value:[acceptLanguagesComponents componentsJoinedByString:@", "]];
 
+    NSString *userAgent = nil;
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wgnu"
 #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
     // User-Agent Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43
-    [self setDefaultHeader:@"User-Agent" value:[NSString stringWithFormat:@"%@/%@ (%@; iOS %@; Scale/%0.2f)", [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleExecutableKey] ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleIdentifierKey], (__bridge id)CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(), kCFBundleVersionKey) ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleVersionKey], [[UIDevice currentDevice] model], [[UIDevice currentDevice] systemVersion], ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] ? [[UIScreen mainScreen] scale] : 1.0f)]];
+    userAgent = [NSString stringWithFormat:@"%@/%@ (%@; iOS %@; Scale/%0.2f)", [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleExecutableKey] ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleIdentifierKey], (__bridge id)CFBundleGetValueForInfoDictionaryKey(CFBundleGetMainBundle(), kCFBundleVersionKey) ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleVersionKey], [[UIDevice currentDevice] model], [[UIDevice currentDevice] systemVersion], ([[UIScreen mainScreen] respondsToSelector:@selector(scale)] ? [[UIScreen mainScreen] scale] : 1.0f)];
 #elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
-    [self setDefaultHeader:@"User-Agent" value:[NSString stringWithFormat:@"%@/%@ (Mac OS X %@)", [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleExecutableKey] ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleIdentifierKey], [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"] ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleVersionKey], [[NSProcessInfo processInfo] operatingSystemVersionString]]];
+    userAgent = [NSString stringWithFormat:@"%@/%@ (Mac OS X %@)", [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleExecutableKey] ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleIdentifierKey], [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleShortVersionString"] ?: [[[NSBundle mainBundle] infoDictionary] objectForKey:(__bridge NSString *)kCFBundleVersionKey], [[NSProcessInfo processInfo] operatingSystemVersionString]];
 #endif
 #pragma clang diagnostic pop
+    if (userAgent) {
+        if (![userAgent canBeConvertedToEncoding:NSASCIIStringEncoding]) {
+            NSMutableString *mutableUserAgent = [userAgent mutableCopy];
+            CFStringTransform((__bridge CFMutableStringRef)(mutableUserAgent), NULL, kCFStringTransformToLatin, false);
+            userAgent = mutableUserAgent;
+        }
+        [self setDefaultHeader:@"User-Agent" value:userAgent];
+    }
 
 #ifdef _SYSTEMCONFIGURATION_H
     self.networkReachabilityStatus = AFNetworkReachabilityStatusUnknown;
diff --git a/AFNetworking/UIImageView+AFNetworking.m b/AFNetworking/UIImageView+AFNetworking.m
index b577cf1..f0f8274 100644
--- a/AFNetworking/UIImageView+AFNetworking.m
+++ b/AFNetworking/UIImageView+AFNetworking.m
@@ -101,13 +101,13 @@ static char kAFImageRequestOperationObjectKey;
 
     UIImage *cachedImage = [[[self class] af_sharedImageCache] cachedImageForRequest:urlRequest];
     if (cachedImage) {
+        self.af_imageRequestOperation = nil;
+
         if (success) {
             success(nil, nil, cachedImage);
         } else {
             self.image = cachedImage;
         }
-
-        self.af_imageRequestOperation = nil;
     } else {
         if (placeholderImage) {
             self.image = placeholderImage;
@@ -116,27 +116,27 @@ static char kAFImageRequestOperationObjectKey;
         AFImageRequestOperation *requestOperation = [[AFImageRequestOperation alloc] initWithRequest:urlRequest];
         [requestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
             if ([urlRequest isEqual:[self.af_imageRequestOperation request]]) {
+                if (self.af_imageRequestOperation == operation) {
+                    self.af_imageRequestOperation = nil;
+                }
+
                 if (success) {
                     success(operation.request, operation.response, responseObject);
                 } else if (responseObject) {
                     self.image = responseObject;
                 }
-
-                if (self.af_imageRequestOperation == operation) {
-                    self.af_imageRequestOperation = nil;
-                }
             }
 
             [[[self class] af_sharedImageCache] cacheImage:responseObject forRequest:urlRequest];
         } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
             if ([urlRequest isEqual:[self.af_imageRequestOperation request]]) {
-                if (failure) {
-                    failure(operation.request, operation.response, error);
-                }
-
                 if (self.af_imageRequestOperation == operation) {
                     self.af_imageRequestOperation = nil;
                 }
+
+                if (failure) {
+                    failure(operation.request, operation.response, error);
+                }
             }
         }];
 
diff --git a/README.md b/README.md
index 916d99c..4d2f226 100644
--- a/README.md
+++ b/README.md
@@ -82,7 +82,7 @@ AFNetworking is architected to be as small and modular as possible, in order to
     <td>A subclass of <tt>AFHTTPRequestOperation</tt> for downloading and processing images.</td>
   </tr>
   <tr>
-    <td><a href="http://afnetworking.github.com/AFNetworking/Categories/UIImageView+AFNetworking.html">UIImageView+AFNetworking</a></td>
+    <td><a href="http://cocoadocs.org/docsets/AFNetworking/1.3.1/Categories/UIImageView+AFNetworking.html">UIImageView+AFNetworking</a></td>
     <td>Adds methods to <tt>UIImageView</tt> for loading remote images asynchronously from a URL.</td>
   </tr>
 </table>
diff --git a/Tests/AFHTTPClientTests.m b/Tests/AFHTTPClientTests.m
index 36ce7c4..d7188b2 100644
--- a/Tests/AFHTTPClientTests.m
+++ b/Tests/AFHTTPClientTests.m
@@ -257,13 +257,15 @@
 }
 
 - (void)testPostWithParameters {
+    [Expecta setAsynchronousTestTimeout:5.0];
+
     __block id blockResponseObject = nil;
     [self.client postPath:@"/post" parameters:@{ @"key": @"value" } success:^(AFHTTPRequestOperation *operation, id responseObject) {
         blockResponseObject = responseObject;
     } failure:nil];
 
     expect([self.client.operationQueue operationCount]).will.equal(0);
-    expect(blockResponseObject).notTo.beNil();
+    expect(blockResponseObject).willNot.beNil();
     expect(blockResponseObject).to.beKindOf([NSData class]);
 
     NSError *error = nil;