Installation problem with Acer Aspire desktop T671

I bought an Acer Aspire desktop model T671 and have had the problem that all linux distributions seem to hang (possibly due to a mutex) when trying to do a screen install. Instead turning off the acpi in terminal mode allowed me to install most distributions.

Imagine my surprise when I installed OpenSUSE 11.0 and had no problems at all and everything worked perfectly.

I recently downloaded the 64 bit OpenSUSE 11.1 distribution and that reverted to the above problem.

Can U please tell what differences there are between these distributions and how to rectify my 11.1 distribution?

Thanx