CM7 Application not installed issue + Angry Birds

[Guest Ernoke]

I am using CM7 1.8, and have latest GO Launcher. It already happened to me several times (even with CM7 1.5):

when i click the application icon in the launcher it display a toast "application not installed"

It happened with IP Webcam and Angry Birds Seasons. With IP Webcam, uninstalling and then reinstalling the app from market fixed the issue,

but I still couldnt reinstall Angry Birds, Market quickly displays "download unsuccessful" and thats all.

Any of you already had this issue?

Sitting on the toilet became so boring without Angry Birds :D

[Guest Ernoke]

and now i cant install angry birds rio, it says after downloading and installing : "application was not signed correctly"

:'-((((((