Firefox has for no apparent reason decided to stop working on this machine. It opens, and says "Welcome to Gmail" in the title bar, but has no tabs, and nothing in any toolbar is responding to mouse clicks.

I've uninstalled and reinstalled it twice (once from the installer on my desktop, once from a fresh one at mozilla.org), and restarted my computer each time.

Any ideas?

Jessica, I found this:

How do I troubleshoot other problems?

If you encounter strange problems relating to bookmarks, downloads, window placement, toolbars, history, or other settings, it is recommended that you try creating a new profile and attempting to reproduce the problem before filing bugs. To create a new profile, see the Manage Profiles How-To. Migrate your settings files (Bookmarks, Saved Passwords, etc) over one by one, checking each time to see if the problems resurface. If you do find a particular profile data file is causing a problem, file a bug and attach the file.

Thanks, I'll try that when I get home tonight.

I've been getting to know my registry editor real well, and I'm wondering: there are a ton of folders in there for various domains that I don't know what they are (a lot of porn and gambling and whatnot). Is there any reason not to delete those registry keys?

If you're worried, you can either back up your registry before you make any changes, or depending on what you're running (I forget) make a System Restore point before you delete stuff. That way, if anything goes boom, you can put it back.

Ah, good one. I have Windows XP.

Azureus now hates me. I'm pretty sure it's Azureus. The penultimate time I started it up, it installed some update, and now transfers are glacial (no ETAs). I'm using the NAT/Server port tester, and the ports that were being used now give a NAT error. The default ports give a NAT error. Port 80 gives a NAT error. My firewall hardware/config hasn't changed, and I turned Panda off for the duration of the test.

What should I be checking?

eta: Never mind -- I turned off Upnp and did some other fiddling, and now I'm at least passing the NAT test.

Grr. I'm back. So it's passing the NAT test just fine. But I'm still, despite seeing hundreds of peers and seeders in brackets, getting absolutely no action on that main window. In the status bar at the bottom it lists a download and upload speed, but not next to any of the actual files.

I've seen a couple people on LJ bitching about this update, ita. Which is not really any help, but at least you're not alone.

Okay, so what's the next torrent client in line? This is now useless software to me. Nothing's moving.