My FC4 isn't working correctly.

From time to time it closes some system tray related apps ( e.g. aMule, Rhythmbox... ) and after a "long" time ( something like... 45 minutes ) the whole desktop frezes or just log out suddenly . Is it a known bug? What can I do so as to fix it? Another question... I'm currently learning C and I'm love with Anjuta. I've seen on their website that there is a new release ( 2.0 I think... ), when will it be released via yum?

Thanks in advance

... Vinicius Menezes ...