User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.0.3705; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; FDM) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b1) Gecko/2007110904 Firefox/3.0b1 Starting 3.0b1, it opens a customized google search page, but not the custom homepage. Also, clicking the "Home" button shows no effect. Reproducible: Always

WFM on Windows XP.

Doesn't for me and didn't in "inofficial" beta. If it's due to having FF2 already installed this might be an issue more people might be experiencing. Any diagnosis I could do? I've tried starting in safe mode with add-ins disabled. Issue still present.

What homepage do you see in Options -> Main?

I see: When Firefox starts: Show my homepage Homepage: http://www.heise.de/newsticker/ When I start FF, the home page stays blank (safe mode). Clicking "Home" button then shows the customized google page. I believe this issue is related to bug 404467 and bug 404466 that also appear with my installation- I'm suspecting a common, deeper reason for this behaviour.

I've done some further tests (all in safe mode) and found the following: renaming Application Data\Mozilla\Firefox\Profiles to Application Data\Mozilla\Firefox\Profiles.old: - FF3 doesn't start, instead claims "Application already running" renaming Application Data\Mozilla\Firefox to Application Data\Mozilla\Firefox.old: - FF3 now starts and UI _is_ working Conclusion: the problem is within the Mozilla\FireFox folder- probably the profile?

Delete all places.* in your profile and try again. See bug 404695.

Great suggestion- that's it, thanks!