I found some solutions here: http://edtake.wordpress.com/2010/05/04 /ubuntu-slow-wireless-after-upgrading-to-10-04/
It it will help I'll write it down -- Sudden drop of connecton speed https://bugs.launchpad.net/bugs/581936 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
