It appears that the .xsession-errors file creates anew after each reboot, moving the previous content to .xsession-errors.old and an enormous size file can be eliminated by rebooting twice, but what is causing the file to grow needs to be determined and fixed otherwise the problem recurs. I think my problem has been found to be playing video files and the driver for my video card, ATI Radeon Mobility M6 LY, is not properly supported under Ubuntu 9.10, although it was previously under 9.04 and earlier.
It appears that the .xsession-errors file creates anew after each reboot, moving the previous content to .xsession- errors. old and an enormous size file can be eliminated by rebooting twice, but what is causing the file to grow needs to be determined and fixed otherwise the problem recurs. I think my problem has been found to be playing video files and the driver for my video card, ATI Radeon Mobility M6 LY, is not properly supported under Ubuntu 9.10, although it was previously under 9.04 and earlier.