Asus K52 / Asus A52

[paologab]

Hi
I've upgraded to 13.04 (64bit) and the touchpad is unusable (with any DM I have: gnome shell, cinnamom, with or without effect): gestures uncontollable, sliding scrambled
anyone with similar behaviour and, hopefully, solution?
paolo

edit:

it happens only with ethernet cable connected; with it disconnected or wifi I've no problems...