Hi, we have had instances where virtual cubes 'un-process' themselves. We use Analysis Server ver 8.0.760 - SP3a - on a Windows 2000 Advanced server ver 5.0.2195 SP 4 build 2915. Our cubes are based in the UK but their source data are on Teradata machines in the US. It possibly seems to be related to server shutdowns and may have something to do with the ODBC setup to the source environment. I have checked the usual sites but with no luck, any help would be greatly appreciated. Thanks.