Help needed:MBP net connection slow on OSX but fast on Vista...

Ok..I've searched these forums for a while, seen lots of posts taking about people having problems with their airport card, routers and the like..but I haven't seen anyone having quite the same problem as me. My 17" 2.33Ghz C2D is linked to my 1Mb ADSL internet connection via an Aztech DSL600EW modem router.The problem is that the connection speed is really slow when I'm running the machine on OSX. I know it's an OSX thing cos the same machine,connected to the same router and running Windows Vista via Bootcamp will connect to the net ALOT faster. For example, if I'm viewing videos on youtube with OSX, I have to wait every few seconds for the video to buffer, but on Vista, the buffering is way ahead of the video. Another example would be downloading files...say from rapidshare. The typical download speed I get on OSX would be around 5-10Kbps, but with Vista, I get at least 25Kbps.
I'm quite new to OSX, and still trying to learn my way around the operating system. It seems such a pity for a really great machine with a really great operating system to be let down by slow internet connection. I hope someone out there will be able to help me sort this out. Thanks in advance.

Great, happy that it "seems to speed up things ..." Why not run the SpeedTest and "know?"
I use IPNetTuner ($30, free 21 day trial).
http://www.sustworks.com/site/prodiptxoverview.html
"*Why is it Sometimes Necessary To Tune TCP/IP*?
TCP/IP is not controlled by any manufacturer and is designed to work on almost any kind of underlying network with widely varying characteristics.
To meet this challenge, the protocol designers made TCP adaptive. TCP is self monitoring and optimizes its own behavior to match the network environment.
*Why can't somebody just write a utility that analyzes my network and automatically selects the optimum settings?* Such a tool would be both useful and popular. The answer is they already have, it's called TCP/IP, but sometimes it needs a little help.
In most cases, TCP works remarkably well all by itself. Tuning is needed in those cases where TCP doesn't quite get it right because the the network behavior is outside the expected range. Typical problems include:
Asymmetric connections that are much faster downstream than upstream.
High performance connections with relatively long latency ..."

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Help needed:MBP net connection slow on OSX but fast on Vista...

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