I'm having problems with an Outlook 2003 install on a single computer on my network. We use document management software with a client that can export documents as attachments to a new email message. On one particular computer this will only work once. The second time you try to export this way you get an error that Outlook is out of memory. I've discovered that the instance of Outlook that creates the email doesn't close when the message window does. I can run Outlook but it starts a new process and closing it doesn't end the one that appears to be an orphan of some kind. If I end the process that causes the problem manually I can export another email attachment with no problem. If Outlook is open when the export is attempted an error pops up suggesting to close all programs and restart Windows in order for Outlook to run.
Other computers don't have these problems, and this computer didn't have any problems when we were on Groupwise a month ago (using the Groupwise client not Outlook). Office 2003 has the latest service pack, and connects to Exchange Server 2003 with the latest SP. Outlook isn't set to use Word as the email editor. I've tried uinstalling and reinstalling Office and the Service Pack.