Crashes during Salome

Hi,

I am not familiar with CFD and other programs in Caelinux, but my friend who is in this business uses Ansys showed me how it works. Unfortunately, when using Salome, it sometimes crashes, I don't know what happens, the PC just freezes even the pointer won't move. It happens after a 3D mesh is generated. This occurred two times within one hour, exactly after the mesh.

Offtopic: I have upgraded ubuntu 10.04 LTS to 10.10, does this effect Caelinux???