Since I apt-getted up to 3.1.2 a week ago, Konqueror has trouble with JavaScript. Yahoo! Mail thinks I don't have JavaScript, as do allmusic.com and raiffeisen.ch. The best message I've seen is here:
https://tb2.raiffeisendirect.ch/ "Your browser doesn't support JavaScript, or it's currently disabled." I've tried messing with the Settings, but to no avail. I'm on PPC. Please CC me, Frank