I've had it happen a few times now....

Computer specs are:

Dell
Model # M5030
OS: Windows 7 Home
Processor: AMD Athlon II P360 Duel core processsor 2.30 GHz
4.00GB RAM

Ok, so I am using my laptop to play and the only "bug" I've been having is that the keyboard will freeze up every now and then. I can use the mouse to buld up an attack and use potions/mana, but I can't move (from mouse or otherwise).

Since I am using my laptop, I play by touch not needing to look at the keys. Not sure if there is a combo of keys I am hitting to make the keyboard not to work, but if I restart the game I am able to use the keyboard...

Any ideas?