I have 2 mouses - one PS2 and one USB - USB Logitech MX 1000 - PS2 old ball mouse - Gentoo 2.6.13

PS2 works perfectly but MX 1000 on USB works litle crazy, if booth of them are plug in - it click everywhere and move like crazy
if it is only USB plug in - then it doesnt move

it start when i switch from 2.6.11 to 2.6.13 - on 2.6.11 it works fine - original Logitech-applet doesnt help - old config doesnt work correctly for me now :o((

Any advise ?