I have a savings account with Egg. One of the things I took into account when choosing them was the fact that their web site worked just fine in my favourite browsers (Galeon or Mozilla on Linux). They'd obviously realised that not everyone uses Internet Explorer. This should, of course, be how all web-based bank accounts work but you hear so many stories about other banks getting it wrong.
Then last week I got an email from Egg introducing some new functionality on their web site. Apparently I can now view balances from other banks on my main Egg page. This would be pretty cool as I have four or five accounts that have online access. I say "apparently" as I haven't been able to access the new pages yet. When I try I get a page saying that the new stuff is not supported on my browser suggesting that I "upgrade" (for free!) to IE. They also apologise that the system is not currently available to Macs.
I've sent a strongly worded email to them but so far I've had no response. I've since seen this thread on uk.comp.os.linux, which says that the new services are being run in conjunction with Microsoft - so things are unlikely to change.