Hi Maarten, I installed the synaptics driver, and rebooted into the standard kernel, and the standard kernel was really unstable so I rebooted back into mainstream kernel. I'm a bit concerned about the security implications of running an old mainstream kernel, but at least the mainstream kernel is stable. I'm using the same synaptics driver in both by the way, since it's the same system, and my touchpad works fine in mainstream. Perhaps there is something in one of the modules that is part of the Ubuntu kernel that is not included in the mainstream kernel that is causing issues? For example, in the mainstream kernel, I can't run vmware, and there is no ipv6, and app-armor support is significantly reduced, and I imagine there are some other modules in the Ubuntu kernel that are not part of the mainstream kernel? Hugh On Thu, Jun 7, 2012 at 7:25 PM, Maarten Lankhorst