I had many problems with the new update. Including lag ,slowrezz,jumpy movement.
I called L.L and was told i had my firewall up which i did not then was told to ping my computer :/. I quickly hungup as I was pretty sure this guy had no idea what he was talking about.Anyway searching through L.L knowledgebase i finally found this http://secondlife.com/knowledgebase/article.php?id=293
if your on a amd processor it very well be your problem. It worked liek a charm for me.
I just wanted others to know so they dont have to experience the same problem as myself.