I am wondering how long it might take to install Service Pack 3. I am trying to install it on another computer running XP, and it has been over an hour since it started and according to the bar it is about 1/2 done, but the blue bar hasn't moved in over 30 minutes. Right now it says "Installing SHIMG32.DDL". Is this normal behavior, or how long does it normally take to install Service Pack 3? I have been hesitant to install it, but a computer tech assured me that all the bugs had been fixed and that it is safe to install it now. Has anybody else had this problem installing Service Pack 3?