I don't know if this is the correct forum for these questions, but I do not know where else I may be able to post them. If inappropriate, please direct me to another discussion group. I have been told that running imaging processing software in a Microsoft Windows operating system causes the pc to bog down to the point where the pc has to be rebooted every couple hours or days (days if the machine is never turned off). Also, I have been told that this problem does not exist with Linnex (misspelled?, syn Redhat) operating systems. Has anyone experienced this? Could anyone shed some light on the subject of preferred operating systems for astronomical software, and any computer resource problems in running image processing software? Stan --- This message is from the AZ-Observing mailing list. If you wish to be removed from this list, send E-mail to: AZ-Observing-request@xxxxxxxxxxxxx, with the subject: unsubscribe. The list's archive is at: //www.freelists.org/archives/az-observing This is a discussion list. Please send personal inquiries directly to the message author. In other words, do not use "reply" for personal messages. Thanks.