I know there are some posts on Size Mismatch Errors already, but they are all long dead, and this happened to me today. I updated to 2.2.1, tried jailbreaking via quickpwn, didn't work, DFU, restore etc, as you do, and then re-jailbroke, restored my ipod from the backup, worked fine, went to cydia, and i can download everything fine except from the BigBoss tool, where on EVERY package it comes up with an error/size mismatch pop-up. Sometimes, after i click the RETURN TO CYDIA button, it brings up a jokes webpage instead of the app info, which was VERY strange. Anyone know whats up? Happened to anyone else? Is there a fix, and most importantly, what is with the jokes webpage!? Thank you!