I talked with my ISP administrarator...
Maybe it is enough to setup ADSL/PPPoE conection. Find this in K-menu and try.
Everything was ok but when it triggered the connection what happend was: `RP-PPPoE plugin version 3.3 compiled against pppd 2.4.2`
You said this in your first post. Did you have some problems with this, I think I had same masage, but conection to Internet worked. Did you try to surf? After this masage, start your FireFox and see what will hapen.