I have v5505 with T7300 from couple of days. I'm using Debian Lenny. Everything worked fine until yesterday. I locked my touchpad trought Fn+F6, but I'm not able to unlock it back. Restarting the computer or setting BIOS defaults doesn't help. Pressing Fn+F6 on boot doesn't work also. I tried running Knoppix from DVD and toucpad worked. I disabled it with Fn+F6 and the situation was the same - couldn't enable it anymore. And something strange - after rebooting in same Knoppix DVD it didn't work again! Tried another Knoppix (different version) and touchpad worked again. Pressing Fn+F6 disabled it and again after a reboot it was disabled again. Where is this setting saved that even after reboot it stays? Is it OS dependent as it can remember in wich OS it was disabled and stays that way? And after all why can not it be enabled or cleared?
Now touchpad doesn't work and I have to use USB mouse.