I had similar problems with my wifi. I did a hard reset after my 2.2 update and reloaded all of my apps. The x is lighting fast on wifi now. There are some apps that don't play well with motoblur and wifi (remote desktop,google talk and a few others) they work fine on the 3g network, just slower. I was told by an authorized motorola agent that this is normal and has to do with motorola software not a hardware issue.