>Hi Mike,
>
>> Have you tried any of these other near-GUIDs? Like Jimmy Nillson's COMBs?
>
>Yes. In older applications with FoxPro tables we used our own approach to creating unique IDs written in VFP because at that time calling a DLL function was significantly slower than using our own routine. In new applications we use only GUIDs and retired our own routine.

I'm sorry. I don't think I was clear enough. There are newer forms of GUIDs that apparently deal with performance problems introduced by GUIDs placement in indexes. Have you tried any of these: SQL Server 2005 NewSequentialID, COMBs instead of GUIDs, etc?

Thanks!