Microsoft sucks in general, their updates have been known to break things. You really should try to roll back using a restore point before the update. Sometimes microsoft updates things that break other things (for example, if you install internet explorer 8, it breaks halo, personally id rather have halo cause IE sucks). My mom (shes pretty good with computers too, but i set and configured her netbook) has had problems with that update too. You arent alone on the problem, i can tell you that. It just so happens that your computer was configured in a way that the update just doesnt like it and it causes problems.