All browsers (Safari, Chrome, Firefox, & Opera tested) run slow to load pages when Fusion 5.x VM is running. Nothing else runs slow on the Mac side. CPU / RAM all "normal" and not exhausted.
As soon as I shut down Fusion, the problem goes away. Doesn't matter if the VM is in NAT or Bridged networking mode. The VM browser (IE on Win 7) is slow if in NAT mode, but runs fine if in bridged mode.
Anyone else seen this?