Internet connection works unstable?

[Yanny C]

When I'm surfing on internet, sometimes the web pages suddenly stops loading and after I wait for a long time, the connection seems to get back and all the pages loads again, I can click everywhere, etc. Then all of sudden I get disconnected again and happends the same as described before.
I don't think it's the internet connection, because other pc's from the same connection have no problems. And MSN Messenger works fine in my pc.

A restart of the computer does not help. I have read suggestions on internet, such as installing Spyware Search & Destroy, but it doesn't find any problem. Also, I'm using Firefox, since it's safer and better than Internet Explorer.

What should I do?

[gifter]

even your using a different ver. of a search engine it ain't in there. it must be your refresh rate is lower than 72khmz and another your computer might be choking on it's memory i mean your cpu memory is so low... try getting another internet connection, if your using a laptop and you're using a wifi connection then that's the problem...