Not necessarily when im running photoshop, but anytime i goto draw or add/edit anythig in the canvas, it lags like hell, cpu shoots to 100%. Then again, it is only a dual core
Looks like you've figured it out by yourself.
I'll just add some points then: The program is resource hungry, So the dual core would most likely inadequate. moreover, I noticed you're using an 235"e" series. As I recall the "e" lineup is designed for lower power consumption, which inevitably will affect performance. Anyone correct me if I'm wrong. I'm all open for correction.