Due to Iceweasel (Firefox) being so slow on my machine, I switched to Konqueror, which is reasonably fast and full of features, but nowhere as good as Iceweasel, I must say. However, IW is unbearable, so I'm waiting for FF 3.0 to use IW again.
I use an e-mail client to read my e-mail over IMAP, my main account being a Gmail one. However, I sometimes visit the Gmail site, for example to set it to fetch e-mail from some other accounts. I had always done it with IW, and everything worked fine, but now with Konqueror it doesn't.
With Konqueror I get the message:
and some features are missing (specifically, the option set how to fetch e-mail from other accounts, and some others).
I could understand it if Konqueror were missing some functionality/plugin that IW has and Gmail requires. But it is not the case. I can tell Konqueror to identify itself as Firefox, and THEN the Gmail page shows up correctly, so obviously it's not due to Konqueror's limitations. It sounds like a case of sloppy programming from the guys at Google, with something like:
if browser is one of 'IE', 'Firefox', 'Safari': show this page else: show dumbed down page
After years of discrimination to non-IE users, and a tremendous fight to make webmasters produce standards-compliant sites, instead of specific browser-compliant ones, we still have to suffer this shit. And from Google, the "don't be evil" guys, supporters of free software and all that BS.
By the way, this issue is known, and mentioned, for example, in the Wikipedia page for Gmail.