do you not think that Firefox is becoming the new IE? If I can remember correctly through my drunken history of the last 8 years, Firefox was first promoted as an alternative the bloated Mozilla - and quite rightly so. Recently though, despite all the releases and the announcements on brand new 10x-faster JavaScript interpreters I find it's bogging down to an almost unusable level.
Once upon a time there used to be configuration to permit or deny javascript to run - now this is split into 12 different parameters, 7 of which are hidden behind the about:config screen. The default is now for pages to be able to open windows hiding the menu and status bar. WTF?
Once upon a time there used to an option to open new pages as a tab or in a new window - now this is split into 2 different parameters (browser.link.open_newwindow and browser.link.open_newwindow_restriction) which make no sense to anybody.
Do you expect 'backspace' to go 'backwards' in your browsing history? Everybody does - on all browsers, except for the Linux release of Firefox - for no understandable reason they decided that the Linux Firefox should do nothing upon pressing backspace, but all other versions should continue the convention.
Do you actively use the overly complicated features of the re-written Bookmarks functionality on Firefox 3.x? I don't, nobody in my office (20 people) does. Everybody hate it.
And lastly... privacy. Firefox 3.x made a real big push for 'privacy'. They said 'you can toggle private browsing on and off' - and 'you can delete browsing history over the last hour, day, month etc..". SUPER LIE. Try deleting your history (everything!) then go to your .mozilla/firefox/{UID}.profile directory. Now...try running 'strings' on your places.sqlite file and try running strings on the files in the bookmarkbackups directory. Yeh, privacy, HUH?