much more detail required. You say its connected through a wireless network, what is the configuration of this, is it a hotspot, or a home network with a wireless router? I'll assume the latter, what type of connection is is (adsl/cable)
Are there other pc's on the network? are they getting the same problems? what happens if you plug the laptop into a port on the router rather than using wireles? If you connect a pc directly to the internet is it still slow? How is the router configured? When you say it takes ages for the pages to load, do you mean it takes ages to FIND the page, or generally loading times. Can you knock the "turbo mode" or whatever off for a while and try it then.
Have to go out, sorry for such a rushed response but it should give you a bit to go on for now.
