Well I was playing IW5MP and when I refreshed I only got around 30 servers rather than the usual 200 something. Is there something wrong with the server or is it just me (and how I can fix it)?

Well, either they went into my pocket, or your router's firewall is being a pain in the ass.

I would advice you to turn off your router's firewall, since I can't find any server in my pocket.

or check filters