guys, thank you very much for sending me your modified modprobe!!!
i replaced mine with this one and it worked!!
let me tell you more on this:
i have isolated the issue. i have now applied the modprobe trick from the suse portal page successfully with the modprobe file sent to my email (no more warning messages shown during initial boot), and removed one of my 2 isp dns addresses. i only have 1 isp dns.
the isolation in this issue is, with the aforementioned modification, that internet works like an arrow inside kde, because it loads an application called kinternet when kde starts up (i don't know what it does because it loads and then disappears from the system tray, as a matter of fact it never stays there for more than 1 second, then goes away) that connects me to the internet with no problem.
ths issue is, that i am using xfce4 as my main window manager (not kde), and inside xfce4, firefox has the time-out issue and the slow browsing problem.
of course i can't apply kinternet there, it says something for qinternet.
so, here's my new questions:
1) when checking suse desktop pictures in forums, i see that kinternet (the icon resembling an electric plug) stays in the system tray... why mine doesn't? (although is a minor issue)
2) and... why internet is not working when using xfce4? (which is odd, because when i use kde, internet works instantly now due to the kinternet application)
* what does qinternet do?
* how do i run it at start up when logging into xfce4?
thanks guys for all your support and hoping this post will help other people having the same issues.
Omar