What's going on with my wireless?
Solution 1:
Maybe there is a problem with the n-channel of your wifi.
Give the following terminal commands a try:
sudo rmmod iwlagn sudo modprobe iwlagn 11n_disable=1
Try browsing again and if there is an improvement, make this change permanent by creating an 'options' file:
gksu gedit /etc/modprobe.d/options.confand add the line
options iwlagn 11n_disable=1
Hope this will help.