weirdest network problem - only native kde apps resolve hostname

["xristoph@googlemail.com" <xristoph@googlemail.com>]

Hey there!

Since a few days, I have the WEIRDEST network problem: only /native/
KDE apps seem to be able to resolve hostnames (i.e., konqueror,
kopete, etc.). Non-native apps such as iceweasel, evolution, even apt
completely fail to resolve hostnames. (iceweasel does not even try
seriously - typing a web address results in /immediate/ complaint
"cannot find server"). The only non-native app so far to succeed is
ping.

Anyone got any ideas?!