Mouse not working on IBM ThinkCentre

[H S Rai <hsrai@gndec.ac.in>]

There remain always some problem with Kernel 2.6.8-2-386. 
With this it used to be very slow. So, I was using this PC 
to my satisfaction with Kernel 2.4.27-2-386. Unforunately, I 
updated and upgraded every thing (including unstable, 
Contrib etc). With this mouse stop working in X under Kernel 
2.4, so now I have to work with Kernel 2.6. But, in this 
system hangs, and some time unplugging and plugging mouse 
and keyboard solve the problem. Can I remove this problem.

Since It is known that 2.6 is not working properly with IBM 
ThinkCentre, so I am willing to use 2.4. How I can make 
mouse working. I tried varous options while reconfiguring X, 
but fail to achieve desired results.

With all configuration file same, jist changing Kernel, can 
it make devices not to work? If that is that case, what are 
the options which I can try.

Or, what is the way to uninstall all unstable packages, and 
to have only stable packages?

Thanks in advance.

--
H.S.Rai