whew! I was worried at first that I buggared a card somehow during flashing, but seeing as how others have issues with core/MEM clocks not reporting . . .
running WIN XP here, Crossfire 3870s, I went and flashed both cards back to their stock BIOS - I also have the same issue with GPUZ not reporting core/MEM clocks, but only seems to be with my primary card
here's the 2 important tabs, one set for each card:
the unofficial GPU-Z.exe you provided earlier in this thread reports exactly the same, but reports an error when trying to upload images - if you need those screenies, I'll be glad to post them.
I thought perhaps there might have been an issue with running SpeedFan and ATT hardware monitoring, so I exited both of those programs, and no change, either. Didn't know if this bit of info would be helpful or not.
BTW, ATiTool does report correct clocks on both cards, and ATI Tray Tools reports correct clocks on the primary (I don't know of any means to have it read the secondary GPU). I haven't tried Riva yet . . .