Index: cache.php
===================================================================
--- cache.php	(revision 13986)
+++ cache.php	(working copy)
@@ -398,7 +398,15 @@
 				$servers = explode(';', $memcached_servers);
 
 			 	foreach ($servers as $server) {
-			 		list ($server, $port) = strpos($server, ':') !== false ? explode(':', $server, 2) : Array ($server, 11211);
+			 		if ( preg_match('/(.*):([\d]+)$/', $server, $regs) ) {
+			 			// "hostname:port" OR "unix:///path/to/socket:0"
+			 			$server = $regs[1];
+			 			$port = $regs[2];
+			 		}
+			 		else {
+			 			$port = 11211;
+			 		}
+
 			 		$this->_handler->addServer($server, $port);
 			 	}