this issue started 1 month ago. Let me explain. I'm running 12.04 x64 with unity. Connected through wireless. Every time I launch either firefox or google-chrome, these browser need at leat 25-30 sec to launch my home page (whatever homepage that be). Used to work perfectly. Opera works a bit better but still.... I already tried firfox in safe mode whithout any extension activated, switch from network-manager to wicd, erased all my configuration files under /home....nothing helped. Tried also to tweak my router...but nothing. To make it even more "funny" all my other laptops don't have this issue...in 1 sec there goes my home page....;)
Please...does anybody have a clue?