"I have not done the update to 10.6.7 even though it is there, what are your thoughts on it?
Should I update or should I leave well enough alone?"
Warning:
10.6.7 has some kind of "Adobe font bug" that is raising havoc with those who work with pdf files. If you visit macintouch.com there is a lengthly discussion about it, and Apple finally admitted that the bug in fact exists.
Having said that, 10.6.6 is just fine.
My suggestion is that you download the 10.6.6 "combo updater" from Apple and apply that.
And afterwards, download the new version of Safari (just introduced yesterday) and apply that, too.