We use VSS with Analysis Services 2005 in order to have source control and backup (I think this deserves a post of its own). We've been shocked to find out that our VSS didn't save our labes and our versions. The defect we experienced is that after clicking on the history button and then on the OK button in the "choose date range" dialog box, nothing happened. We were sure that no history was saved and that is the reason that nothing happened. After a long search in the web, I found this thread in the MSDN. The problem is a bug in VSS that has something to do with dates representation in Microsoft's code. The workaround is easy, but it seems to work only in Windows 2000: Open the VSS admin program, then Options -> Tools -> TimeZone, and set the time zone as none. That's it.
By the way, notice that my second post in my blog was about date formats and how tricky and dangerous they can be.