Let me just grab this opportunity to rant about updating flash.
Having to manually download and install two separate flash updates (firefox and ie) on a number of my relatives computers every time I looked at their computers has been such a pain. So I was thrilled when they finally, after so many years, got the amazing idea to add automatic updating (seriously, how could this take so long?).
Of course, as it turns out, if you are not running as admin all the time, you may be waiting a long time for the automatic update
(30 days), which is hardly acceptable. Also, I found you have to actually check if it updates both versions, or only one of them.
This is part of the reason I have installed Chrome on their computers -- knock the silent updating all you like, but for people who are not computer experts it is an absolute blessing that it just works.