I used the default live wall paper, perhaps that size isnt ported for Sensation? Shud be.. Or is it "live" related perhaps? Gonna try a static wall paper next, default and a self made one. I read somewhere that sebs latest kernel could speed things up and "fix" the glitches and what not. Gonna try that as well.
Btw, i rebooted, wiped dalvik and cache. The lockscreen frooze again after ~5 min. :D
I also tried the google car thingy, but BT messed something up. Got some FC, and it lagged like crazy. Cant use it.