I quite recently picked up a D-Link DWA-125 USB adapter for my desktop because I'm renting a basement suite and the landlord is offering access to his wireless network. I was running the Retail Candidate for Windows 7 and everything was splendid.
Unfortunately my RC version of 7 expired and I had to revert to Vista due to tight funds.
A couple of days after going back to Vista my download and page viewing speeds have become atrocious. For comparison sake, running Windows 7 I had been downloading some files at about 300-900.00 kb/s and now back on Vista I peek at about 15.00 kb/s. My roomate and landlord both say that since I've switched to Vista their internet was been running slowly as well while I'm online.
I may have found a solution (http://forums.techguy.org/windows-vista/582344-solved-slow-internet-connection-vista-3.html ) in which they state rolling back their drivers solved identical problems. I'd like to test this out, but I cannot find older driver to install over the newer ones.
If anyone can help me by recommending a different fix, or where to find older drivers it would be greatly appreciated.