My host provider informed me of a very annoying problem. My wordpress 2.0 generates thousands of zero size files in directory cache/userlogins and cache/users. Similar number files is also generated in system /tmp/. The number of files is do big that it causes "no space left on device" error and the sessions can't be saved any more.
I didn't noticed that kind of problem on WP1.5
What so big number of files is for?
And how can I configure it so that it stopped breaking the hosting down?
Can caching be switched off at all?