Cannot export to jpeg - disk may be locked or full

Hello!

I have a colleague, who's unable to export her documents (be it Jpeg or PDF). We're using Windows XP SP3 and CS3.

Her computer is a 2.4 Ghz P4 (afaik) with 2 GB ram and lots of free harddrive space (80GB+).

Still, when she try to export a relatively small document, InDesign claims the disk is locked or full. I've tried exporting it on her desktop as well on the server, where she is supposed to save it - but no luck.

When I try to export to PDF, it claims it's in lack of memory, even though there's still physical memory available, as well as a large page-file.

I'm quite sure, it's a bug in InDesign - but what do I do about it?

Thanks in advance

Thomas