I recently installed iDeneb 1.5.1 10.5.7 on my Motion Computing LE1600 tablet. Not everything works like Bluetooth, waking from sleep, screen brightness, screen rotation, buttons, and internal speakers. But what really is annoying though, is that the computer just freezes sometimes.

Its hard to use it for even 10 minutes without it freezing. I can't tell if its from internet usage or from cpu usage. Has anyone else had this problem?
Motion Computing LE1600
Pentium M 1.6ghz
1 GB of RAM
Intel GMA915
Any help is greatly appreciated.