Did it used to work, but now doesn't or is this a new install? I'd start by cleaning the edge connector that goes into the FastSlot on the card w/ a Q-Tip and rubbing alcohol. Then, take a look at the SIMM holders and see if there's anything funky going on there. I've seen A2000 mobo's where the slots have become damaged. The plastic literally cracked, which could cause poor connection. Or bad solder joints underneath the connector from a lot of usage (from installing/removing boards).
