Christian Rickert wrote:

At the university, I saved a huge project of mine containing a density map and multiple (!) rigid-body fitted pdbs.
Although this system is a 32-bit Kubuntu 8.04 only (4 Gig of RAM installed), I observed the same problems with my 64-bit SUSE 10.3 (4 Gig of RAM installed as well) at work.

Creating this project took me two days in total, so I really would appreciate any suggestions from you ...

Hi Christian,
It's possible that your shell is imposing a limit on memory use by a single process.  Before starting Chimera, remove the memory limit of your shell by typing:

csh-type shell:  unlimit

sh-type shell: ulimit -v unlimited

Let me know if this helps or not.

--Eric

                        Eric Pettersen
                        UCSF Computer Graphics Lab
                        http://www.cgl.ucsf.edu