Do you experience problems during downloading?
Check your connection in Status and Interface settings window.
Use Test Server in Config > Servers.
We will probably ask you to do a test using only basic settings.
Do you experience problems during repair or unpacking?
Enable +Debug logging in the Status and Interface settings window and share the relevant parts of the log here using [ code ] sections.
When I'm changing from, for example, the Home tab to History I get the login screen. When I login I get the History tab, but, when I go then to the Queue I got logged out again. It looks like it only happens when you change to the history tab, but it doesn't happens all the time.(nice to test... )
Anyway, I'm running:
SABnzbd version 0.4.12 on Windows XP Pro
Looking with Vista Business and Google Chrome version 4.0.223.16