Hi- I have used jw_sig for ages and its been great but sudddenly I am having a problem with cache. Joomla is set to progressive caching and every 15 minutes it deletes old files, but it doesn't seem to want to delete the jw_sig files - has anyone any ideas please? - it filled up my disk space last night and the site went down -oopss

Check the permissions of the cache/jw_sig folder as well.