Hello,

In addition to the suggestion to Post# 10, from the router setting itself, try changing the Wireless Mode from Mixed or Auto to an 'N' or 'B/G' or 'G' Mode. You shd test each one and see if your speed has improved.

If your Wi-Fi adapter is an 'N' device is shd communicate well with your D-Link N router, is it an N or B/G technology?