The improvements in Iceweasel 3 are great. The new styling really fits in well with my Gnome desktop. However, as with the migration to any major “point-oh” release sometimes things break compatibility.

For this reason, I have been hesitant to fully move to Iceweasel 3. The improved password manager, the new visual styling, improved searching (you can not enter the title of a page in the address bar and it pulls it up in your list of auto completions) and improved zooming are all great, but when I can't do things I usually do, it's not an upgrade.

One thing I do is play a game called oGame. To enjoy it a bit more, I use two extensions: FoxGame and GreaseMonkey with a script from Userscripts.org. Both of these extensions broke with the upgrade to Iceweasel 3 which has moved from Debian Experimental to Sid, which means my days of 2.0 are numbered.

Luckily, I complain. Having complained in the Libervis IRC channel, netdaemon offered me a suggestion that it was possible to override the extension compatibility check. I'll be damned, there is! Here's how:

• Type about:config into Iceweasel's address bar and click the "I'll be careful, I promise!" button.
• Right-click anywhere. Choose New>Boolean. Make the name of your new config value extensions.checkCompatibility and set it to false.
• Make another new boolean pair called extensions.checkUpdateSecurity and set the value to false.
• Restart Iceweasel.

Unfortunately, FoxGame actually is incompatible with at least the RC 2 version of Iceweasel. So I had to manually disable that one, but Greasemonkey, which I utilize more frequently, works just fine thus far.

Also, at some point my work computer (also running Debian Sid/Experimental) updated to Iceweasel 3 and lost it's back button. This is annoying, but not incapacitatingly so, since you can always use ALT key commands or use the right click menu.

Anyway, to restore the back button simply go to View->Toolbars->Customize and click “Restore Defaults”. Problem solved. Both of these tips today gave me a mostly functional, feature enhanced version of Iceweasel 3 and I'm happier for it.