I installed the latest Safari update, but I'm still experiencing performance issues. I just checked the activity monitor and it says that Safari is using over 800MB of 'real memory' and about 600MB of 'virtual memory', even though I only have two tabs open (both of which are text only). These numbers do not seem normal compared to other running processes. I suspect that the memory usage has jumped due to previous browsing sessions, but would correct itself with a full quit/relaunch. Can someone please tell me if these numbers are normal and, if not, what might be causing them? Is there anyway to prevent Safari from having this sort of performance issue (if it is one)? Thanks P.S. I have one extension installed (Ad-Block).