Changed host, WPSuperCache doesn't work anymore. Need advise.

Hello.

Moved blog to another hosting and since then WP-Super-Cache doesn’t work.

Had few errors like:

Warning: opendir(/public_html/wp-content/cache/supercache/www.mysite.com) [function.opendir]: failed to open dir: Permission denied in /public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 1941

Resolved by setting filepermission 755 to all folders in that directory.

But plugin is still nto working properly, on a Content tab i see:

WP-Cache (0KB)

0 Cached Pages
0 Expired Pages

WP-Super-Cache (464.00KB)

0 Cached Pages
5 Expired Pages

If I click delete expired pages – nothing happens, they are still there.

Any idea what can be wrong with my blog? I’m out of ideas what to do to fix it.

Thank you!