Originally posted by Eric Pascarello:
Opera has some debugging tools here: http://dev.opera.com/articles/view/opera-developer-tools/
Personally I know more and more people that are fed up with Firefo and moving back to IE7. IE7 is actually rather nice if you set it up right.
Problem with Firefox is it is getting bloated, and the other issue is the extensions people are running. If you are runing Firebig, make sure it is not enabled. Enabling it slows things down.
Opera is a good browser, but you will find that a bunch of sites will not work.
Eric
I've been running Opera 9.22 on Xubuntu for the last several days. I've always been disappointed with FF on Linux in general. It's always seemed a ton slower than on Windows. I've been pleasently surprised at how much I am enjoying Opera and I am really discovering some nice features as I go. Plus, it's super fast.
Personally, I haven't run across any sites that don't work in Opera, yet.