FWIW, I didn't really pay too much attention to the aesthetic changes, since I realized immediately that the lack of compatibility with many of my 20 or so add-ons would make upgrading at this time more pain than gain. But in my case I already have done some customizing of the look with FF3: Tabs on Top (I guess I was way ahead of FF4 with that one ;-). When using Iron/Chrome I liked that compact feeling and tried to imitate it, using also the add-ons below:) Tiny Menu Hide GUI Bars (hides, among other things, the status bar, making it a pop-up at the bottom left that display only when needed) Hide Caption Title Bar (The title bar in any browser has always seemed like a big waste of space to me.) As I say, I didn't look too closely at the new look of FF4, so it's possible that some of these add-ons are incompatible precisely because they are no longer necessary. (Like the hidden status bar ? Does it pop-up on FF4 when needed ? Or maybe show in the address bar as in Opera ?) But others of my add-ons (Favicon Picker, Text Link, and some others) are also incompatible. Perhaps their functionality has also been incorporated into the default behaviour of FF 4 as well. Or not. Maybe I'll get brave enough to try upgrading again next week. For now it's a waiting game..... As the OP, I appreciate the continued comments. Thanks ! :-)

Malwarebytes finished scanning and there were no infected files found. Not sure there's much point in posting it here, but I'll post it just in case: Malwarebytes' Anti-Malware 1.36 Database version: 2079 Windows 5.1.2600 Service Pack 2 5/5/2009 6:53:44 PM mbam-log-2009-05-05 (18-53-44).txt Scan type: Full Scan (C:\:) Objects scanned: 162741 Time elapsed: 26 minute(s), 40 second(s) Memory Processes Infected: 0 Memory Modules Infected: 0 Registry Keys Infected: 0 Registry Values Infected: 0 Registry Data Items Infected: 0 Folders Infected: 0 Files Infected: 0 Memory Processes Infected: (No malicious items detected) Memory Modules Infected: (No malicious items detected) Registry Keys Infected: (No malicious items detected) Registry Values Infected: (No malicious items detected) Registry Data Items Infected: (No malicious items detected) Folders Infected: (No malicious items detected) Files Infected: (No malicious items detected) ----------------------------- I guess the Avast boot time scan fixed the problem. Or it was some kind of weird glitch that automatically resolved itself by restarting the computer. Everything appears to be working well now. Thanks for all the help. Lynn.

No problem here. It seems to update pretty often and after it updates I click continue and it opens a noscript page. I have never read it very closely, just close it and go with my browsing.

I don't think a user with normal PC experience (and with neither exposure to nor understanding of the depths and bowels of the project) can knowledgeably assess whether or not to do a software update. Even someone with advanced technical knowledge can often not make sense of details gained from only an over-the-fence peek. My advice - accept all updates. When there are cosmetic or unintended hiccups, they're usually detected and fixed in days. For Windows, have restore points so that problems can be rolled back. For browsers, have two or more onboard and current. If one starts acting silly, use another for awhile. As far as differences between browsers? Eh, not really to my eye. They all do the same things the same ways. Some are smaller, some are larger. As with most software, most people don't need or use the bells and whistles so special features don't much matter.