After much thought, I've taken JS-Kit up on its offer to 'fix' my Blogger template (I'm a glutton for punishment). When this turns into another disaster, I'm contemplating switching to Disqus or Intense Debate (both integrate with FriendFeed, and Intense Debate looks particularly good). Nobody seems to offer spell checking in the comments box, and, from reading various support postings, all the comments companies are, to varying degrees, surprisingly clueless about doing their jobs. JS-Kit seems to be the only hope at recovering Haloscan comments.
I'm using Firefox again, but only when I can't use Opera (blog posting is one area where Opera won't really work). The deep problem with Firefox, and one that can't really be fixed, is that extensions tend to be incompatible. Firefox tries to monitor this, but can't possibly figure out whether every possible combination of extensions will work. Twice now I've frozen Firefox completely (and the 'solution' of deleting files from AppData doesn't work). You could run it without the extensions, but then you might as well run IE. I've tried all the various IE clones, but they are all as hopelessly slow as IE. Opera is still far ahead of everybody, and, since the Abe Vigoda plugin is no longer available for Firefox, the only choice for power surfers.