Hi Hans,
Is all the crashing mainly on your Linux box?
Is your CPU, memory and possibly (depending on Motherboard BIOS overclocking features) on-board graphics overclocked?
Do you (or can you set up a) dual boot Windows partition on your Linux machine?
If you do have a dual boot partition and your dual core CPU is made by Intel, can you run IntelBurnTest and provide the results.
Or
Could you set up a Windows virtual machine on Linux if possible using the free VMware Player (it has improved 3D Graphics support on the Guest system) If you can't use VMware then there is the excellent (also free) ORACLE VirtualBox, still has very good graphics support but I'm not sure Sweet Home runs under VirtualBox. Sweet Home definitely runs under VMware Player.
If it helps I am a qualified PC technician and am just trying to help isolate what maybe causing the crashing and instabilities. Thought if I make the text real small no one else will notice I said that!
(Kidding!) If all this is basic stuff for you please ignore this post.
db4tech
PS: If you would like to read about IntelBurnTest, here is the link for you, or if you are using different Hardware there are other programs that maybe useful.
http://www.ultimate-filez.com/?page=downloads
