Help please... Apps won't download.

[Barquey]

I have an ip4 on 4.1 jailbroken with limerain. Whenever I try to download an app from the AppStore or even update one it says "cannot download application. It will be available for download when you log into your computer." something like that. I have tried updating my account info on my iTunes and tried logging out and logging back in. Tried restringing and rebooting. Still won't work. What could be causing this?

Thanks.

[Simon]

Have you tried resetting all settings?