Touchpad autoclicks on Kubuntu 11.10

I've got an ETPS/2 Elantech Touchpad which works fine in Windows.

Since my first install of Ubuntu, and even now on Kubuntu, it randomly autoclicks.

Even the type of click is random, because sometimes it just moves my caret, but it also happens that I find something pasted in the wrong place, as if it autoclicked with two fingers (2 fingers tap pastes from clipboard).

I removed KMouseTool, believing that it's accessibility features where the problem, but I still got it, so I don't know what to do.

Is there any solution?

It's making hard to work with netbeans because it pastes code at random -.-

Thanks :)