im using a macbook, the signal strength is full leh. i changed to channel 11, the speed is intermittent, sometimes its decent enough to surf, and sometimes it become freaking slow, to the extent of websites not loading!
If you have not done this already - hold down the 'option' key when you click the wireless icon in the menubar.
Look down the list to find the 'transmit rate' i believe it's called. You can have a good signal quality but only be connecting at a rate 1-2 Mbits - which in wireless terms is essentially nothing.
Do the same thing when you are next to the router and see the difference. In all likelihood this is a wireless problem and nothing else, so other threads may be more helpful than this one regarding a fix.
