I've uninstalled snapshots, but I can't delete

Hello!
I've uninstalled snapshots, but I can't delete the snapshots in my site.
I've checked all de .htaccess files, and tried changing all permissions to 7777, but It doesn't seem to work.
Any idea on how to remove this files?
I can't put this question in the snapshot area because I've already uninstalled it :S
Thanks!