PS/2 mouse doesn't work in dapper, in breezy work (thinkpad A21m)

[dinux]

Hello..

I install my laptop thinkpad A21m with ubuntu breezy, all working fine
including my PS/2 mouse. And I interested to dapper, so I upgrade to
dapper but now my PS/2 mouse does not work (pointing mouse work).
I already try suggestion from
http://ubuntuforums.org/showthread.php?t=179818
but problem still exist :(

anybody can help me ?

rgds,