With Horde versions before 3.2, the memcache support will generate lock files in your temp directory. This script will clean them out - you can run it from cron nightly. Contributed by Andrew Morgan.
<?php # Clean up stale lock files by checking if the session # still exists in memcache # Connect to memcache $memcache = new Memcache; $memcache->connect('your.memcache.server', 11211); # Walk through lock files $dir = "/tmp"; $total = 0; $removed = 0; $dh = opendir($dir) or die("Unable to open '$dir'"); while(($filename = readdir($dh)) !== false) { if (preg_match('/^lock_([a-z0-9]+)$/', $filename, $matches)) { $key = $matches[1]; $total++; #echo "checking key: $key\n"; if ($memcache->get($key) === false) { #echo "$key not found in memcache\n"; $removed++; unlink($dir . "/" . $filename); } } } closedir($dh); $memcache->close(); echo "$total lock files\n"; echo "$removed lock files removed\n";