webpages load slow on all browsers?

[gregory]

Are you using a Mac or a PC? Some Mac (and iPad) have issues with Wifi connectivity - dropping signal, or not connecting at all. I had an issue with my MacBook Air when I upgraded my router at home. The issue was due to the Mac not supporting the 2.4GHz and 5GHz frequencies on the same SSID. Try to set up your router on 2.4GHz only (i.e. G or N ; disable A). If not try to disable WMM or QOS in your router settings.
If you have this issue with a Windows PC, I would suggest clearing your browser cache, removing all temporary files, trying another browser (i.e. Chrome or Firefox if you use IE). You could also try a wireless diagnostics tool such as http://www.inssider.com/.
Hope it will help.