mouse touch pad becomes unresponsive some times

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http://askubuntu.com – I have a dual boot laptop with Windows 7 and Ubuntu 11.10 loaded.Things have been working fine I am using Ubuntu 11.10 from past 1.5 years, recently I came up with this problem that the touchpad stops responding to movement i.e. touch of finger on it. I thought it could be a hardware issue and started using Windows 7 on same system but then after conitnuous usage for many days I did not faced this issue on Windows 7 but upon a reboot the touch pad becomes unsensitive while working and in that situation my only way is to press Ctrl+Alt+T and open terminal issue sudo reboot and login again t (HowTos)