did you have this problem with vegas 4? i just built a new machine myself around a 3.2ghz p4 with HT and a gig of ram. my intel mobo refused to run it in dual channel mode (blah) but vegas 4 has been screaming fast and stable. i'm wondering whether i should upgrade to v5 or put the money toward acid pro 4.0 so i could at least get some *&%^#_#@ rewire working.