Re: Slow Internet at college on Vista PC in comparison to Mac
Under Local Area Connection Properties, make sure that you don't have any of that extra Vista specific crap enabled. You should have these checked....
Client for Microsoft Networks
File and Printer Sharing for Microsoft Networks (I would turn this off at college, though)
QoS Packet Schedular
Internet Protocol (TCP/IP) V4
Turn off TCP/IP V6 the other crap, unless you have a use for VMWare or Appletalk or whatever. Make sure that the Link-Layer topology crap is all turned off.
The possibility also exists that you have some sort of malware that you're not even aware of. Even the best antivirus software can let you down. Run scans with Adaware and Spybot, the built in Defender product. If you find anything, turn off System Restore, boot into safe mode, then run all three products again along with your AV program and let it do its thing. Scan again later to make sure to got everything.
Finally, make sure you have all the current Windows Updates.