WARNING! - ActionMenu 1.2.4!
I installed the ActionMenu update to 1.2.4 which was presented by Cydia this morning on both my iPad2 and iPhone4.
Both devices now have the spinning wheel of death and are stuck at the Apple logo when you reboot.
Whilst I will be able to fix them this evening when I get home, ActionMenu users are advised to STAY AWAY from the most recent update until a fix is issued by the developer.
This is a widespread problem with many users reporting the same behaviour, so I am not alone :(