This is driving me nuts, unable to load certain sites BBC for instance. Tried all the usual stuff malware bytes, search and destroy etc etc. This is the same with Firefox, google chrome, IE. Ran Dr TCP some time ago when sites were loading slowly but thats not cutting the mustard.
Anyone got any fixes.
Cheers,
Bob

Sounds like your ISP's DNS servers are the problem, could be a server down, or under DoS attack or has had a corrupt update or is just plain overloaded, only thing you can do at your end is use a different severs for DNS.

Try changing your settings to point a free public DNS server such as Google Free DNS

http://code.google.com/speed/public-dns/

[Edited on 20/2/10 by britishtrident]

Thanks Trident I'll give it a go.
Cheers,
Bob