diff -urw mediawiki-1.12.0/includes/filerepo/File.php mediawiki-1.12.0-fixed/includes/filerepo/File.php
--- mediawiki-1.12.0/includes/filerepo/File.php	2008-03-20 22:08:46.000000000 +0000
+++ mediawiki-1.12.0-fixed/includes/filerepo/File.php	2008-04-17 15:53:34.000000000 +0100
@@ -488,7 +488,7 @@
 	 * @return MediaTransformOutput
 	 */
 	function transform( $params, $flags = 0 ) {
-		global $wgUseSquid, $wgIgnoreImageErrors;
+		global $wgIgnoreImageErrors;
 
 		wfProfileIn( __METHOD__ );
 		do {
@@ -535,10 +535,6 @@
 					$thumb = $this->handler->getTransform( $this, $thumbPath, $thumbUrl, $params );
 				}
 			}
-			
-			if ( $wgUseSquid ) {
-				wfPurgeSquidServers( array( $thumbUrl ) );
-			}
 		} while (false);
 
 		wfProfileOut( __METHOD__ );
diff -urw mediawiki-1.12.0/includes/media/Bitmap.php mediawiki-1.12.0-fixed/includes/media/Bitmap.php
--- mediawiki-1.12.0/includes/media/Bitmap.php	2008-03-20 22:08:47.000000000 +0000
+++ mediawiki-1.12.0-fixed/includes/media/Bitmap.php	2008-04-17 15:56:10.000000000 +0100
@@ -40,6 +40,7 @@
 		global $wgUseImageMagick, $wgImageMagickConvertCommand;
 		global $wgCustomConvertCommand;
 		global $wgSharpenParameter, $wgSharpenReductionThreshold;
+		global $wgUseSquid;
 
 		if ( !$this->normaliseParams( $image, $params ) ) {
 			return new TransformParameterError( $params );
@@ -194,6 +195,10 @@
 			$retval = 0;
 		}
 
+		if ( $wgUseSquid ) {
+			wfPurgeSquidServers( array( $dstUrl ) );
+		}
+
 		$removed = $this->removeBadFile( $dstPath, $retval );
 		if ( $retval != 0 || $removed ) {
 			wfDebugLog( 'thumbnail',
diff -urw mediawiki-1.12.0/includes/media/DjVu.php mediawiki-1.12.0-fixed/includes/media/DjVu.php
--- mediawiki-1.12.0/includes/media/DjVu.php	2008-03-20 22:08:47.000000000 +0000
+++ mediawiki-1.12.0-fixed/includes/media/DjVu.php	2008-04-17 15:56:49.000000000 +0100
@@ -62,6 +62,7 @@
 
 	function doTransform( $image, $dstPath, $dstUrl, $params, $flags = 0 ) {
 		global $wgDjvuRenderer, $wgDjvuPostProcessor;
+		global $wgUseSquid;
 
 		// Fetch XML and check it, to give a more informative error message than the one which 
 		// normaliseParams will inevitably give.
@@ -103,6 +104,10 @@
 		$err = wfShellExec( $cmd, $retval );
 		wfProfileOut( 'ddjvu' );
 
+		if ( $wgUseSquid ) {
+			wfPurgeSquidServers( array( $dstUrl ) );
+		}
+
 		$removed = $this->removeBadFile( $dstPath, $retval );
 		if ( $retval != 0 || $removed ) {
 			wfDebugLog( 'thumbnail',
diff -urw mediawiki-1.12.0/includes/media/SVG.php mediawiki-1.12.0-fixed/includes/media/SVG.php
--- mediawiki-1.12.0/includes/media/SVG.php	2008-03-20 22:08:47.000000000 +0000
+++ mediawiki-1.12.0-fixed/includes/media/SVG.php	2008-04-17 15:56:18.000000000 +0100
@@ -38,6 +38,7 @@
 	
 	function doTransform( $image, $dstPath, $dstUrl, $params, $flags = 0 ) {
 		global $wgSVGConverters, $wgSVGConverter, $wgSVGConverterPath;
+		global $wgUseSquid;
 		
 		if ( !$this->normaliseParams( $image, $params ) ) {
 			return new TransformParameterError( $params );
@@ -73,6 +74,10 @@
 			wfProfileOut( 'rsvg' );
 		}
 
+		if ( $wgUseSquid ) {
+			wfPurgeSquidServers( array( $dstUrl ) );
+		}
+
 		$removed = $this->removeBadFile( $dstPath, $retval );
 		if ( $retval != 0 || $removed ) {
 			wfDebugLog( 'thumbnail',