[support] Can't uninstall imagecache

Hi everyone, I have a very strange problem here. I just can't seem to get rid of the imagecache module, no matter how hard I try. I have disabled the module, and uninstalled it, deleted all the relevant entries from the system table, made sure the cache table and my browser cache are all cleared, and run update.php but 'imagecache' still shows up in admin/build/modules every time I refresh it. Whats worse, when I load sites/all/modules it puts an imagecache entry back into the 'system' table. I delete it and reload the page and the entry comes back again. I have not been able to figure out what is causing this and I have no idea how to solve it. But hopefully someone here does. Thanks.