Index: Parser.php
===================================================================
--- Parser.php	(revision 57771)
+++ Parser.php	(working copy)
@@ -1989,7 +1989,6 @@
 				//  elements.
 				$prefix2 = str_replace( ';', ':', $prefix );
 				$t = substr( $oLine, $prefixLength );
-				$this->mInPre = (bool)$preOpenMatch;
 			} else {
 				# Don't interpret any other prefixes in preformatted text
 				$prefixLength = 0;
@@ -2014,7 +2013,7 @@
 						$output .= $term . $this->nextItem( ':' );
 					}
 				}
-			} elseif( $prefixLength || $lastPrefixLength ) {
+			} elseif( $prefixLength || ( $lastPrefixLength && !$this->mInPre ) ) {
 				// We need to open or close prefixes, or both.
 				
 				# Either open or close a level...
@@ -2049,6 +2048,10 @@
 				$lastPrefix = $prefix2;
 			}
 			
+			if (!$this->mInPre) {
+				$this->mInPre = (bool)$preOpenMatch;
+			}
+			
 			// If we have no prefixes, go to paragraph mode.
 			if( 0 == $prefixLength ) {
 				wfProfileIn( __METHOD__."-paragraph" );