Suspend2Disk on Amilo M7425

Hi,

I just installed openSUSE 10.2 on an Amilo M7425. Suspend2RAM works fine  
but Suspend2Disk / Hibernate don't works. The suspend-process stops and  
the last I see is:

Preparing hibernate...
suspend: Snapshotting system

Any hints? Which logs are interesting for you?

Best regards,
Kay