I've got a 30+ page Excel workbook, with 23 sheets that I want to print to a
pdf. I select all those 23 sheets, then do File / Print / <select Adobe
PDF> / OK.

It almost immediately comes up with the "Save PDF File As" dialog. If I
click save, it only saves three pages. If I keep clicking save (or cancel)
it staggers through it, wiping out the previous pdf and re-creating it with
only two or three pages at a time.

This happens whether or not I've clicked Printer / Properties and
de-selected "View Adobe PDF results" and/or "Prompt for Adobe PDF filename"
and/or "Add document information."

BTW, it does a perfect 23-page print-preview.

My OS is Windows XP, home edition, Version 2002, Service Pack 2
My Excel is 2000 (9.0.3821 SR-1)
My Adobe is Professional version 6.0.4 7/25/2005

I would be grately deepful if anybody could help.

Thanks
Tim Carr

Souns like a memory problem to me, not an Excel issue.
But been known to be wrong before....

all the pages have to have the same print resolution, i.e 600, 800 or
whatever. if there is a change adobe will break them up by resolution
and save the pages separately.