Hi I am running Ubuntu 12.04 LTS on a Dell Vostro 1500 with 2 Mb Ram, Have installed Darktable 1.4; program works fine until I try saving a image.
After first installing export worked okay but after a very short time the following happens.

Save image as 8 bit Jepg
Notification that one file is being saved
Than Darktable crashes CPU at this point is 100% and Ram is about 80 to 90% and no file is saved

I have activated Zram to try and maximise my 2 Mb of Ram.

Can any one help please