I have an nVidia GeForce 7300LE vg card in a Dimension E521 desktop, and recently (not paying attention, I dont know when it happened) Vista started showing it as having only ~128MB of dedicated memory (+767 mb of shared memory), however, this card is supposed to have 256mb of dedicated memory.  Is this a known issue?  It doesnt appear to be the same as the problem with memory rounding addressed with a Microsoft Hotfix.  I know for a fact it once showed 256 mb... what would cause this?  Any ideas?