Regarding your 1st error message, I think this is a SmartBridge Alerts error. People using BT as their ISP get this a lot, but it happens with other ISPs too, see here. If you're posting a log on the HJT forum, they should be able to help you with this too.
Madeline.
-------------------- "Power tends to corrupt, and absolute power corrupts absolutely." Lord Acton, 1887.