just installed nis 2013, and now firefox 21 and ie10 won't work properly. getting pages showing html code, and partial pictures. facebook pages won't load completely, and have to be reloaded several times to get anything. maxed out the live updates, and still no success. installed and re-installed 4 times. browsers work perfect w/ nis 2013 removed. suggestions?
dell desktop w/ i7 dual core,
16gb ram, win 7 home premium