Slow wireless D-link " I think "?

I am having a prob with my wireless and cable connection at home… It is the weirdest prob too. I have a 17 apple laptop, and I take to work and work wireless great, everything is fast. Then I go home, and I have a D-Link wireless router. It was working good for the first couple of months. Now when I try to get on line it bogs for a bit, then loads the page… IT SUX! I have called D-link, and tried to debug it and they say that it is my computer. But it can’t be cause it works great at work… Have any of you guys had this prob? thanks!!!