We have several XP Pro 32-bit computers with Acrobat 9 Pro. Most or all of them are having trouble when trying to save or open a PDF from the file menu. If we double click a PDF from Windows Explorer, no problem. Open Acrobat, click File - Open: Acrobat freezes for a long time. I think if I wait long enough it will finally show me the file picker window, but it's going on 5 minutes at my workstation and no dice. We are having similar problems when saving files.
We're also in the process of upgrading to SBS 2008. Over the weekend, I reformatted our SBS 2003 server and, on the same hardware, installed Server 2008 and SQL 2008. SBS 2008 is of course, already installed. The new SQL Server has a different DNS name and IP compared to the old SBS 2003.
My theory is that Acrobat is looking for shares on the old server and can't find them.