When you say every version do you also mean 2008 R2? I will check the indexes and see if there are any missing or that need to be rebuilt. Our...

Ok, thank you! I ended up installing Service Pack 2 and it appears to have fixed my issue.

Did you ever find a fix for this issue? I am experiencing the same thing. SQL08R2 Reporting Services connecting to an Analysis Services Cube. Getting an incorrect sum until the...