MuscleNerd has announced that they “will coordinate ultrasn0w iOS5 compatibility update to come out *after* a planned MobileSubstrate update tomorrow”. This means they will update Ultrasnow with iOS 5 and old baseband support soon. How soon they will release an updated version of Ultrasnow is unknown, but they will start creating this update tomorrow. » iPhone DevTeam Will Update Ultrasn0w For iOS5

Saurik has published a post in Cydia explaining the issues that users are having with Skype and MobileSubstrate. Hit the break to see the complete message.
» Skype and MobileSubstrate Issues Explained by Saurik