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help disconnections/slow speeds

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So I built a new computer and had everything installed pretty good (windows XP), but it seemed like my internet was really slow (30-180kbs down), slower then my old computer running Windows ME with slower specs (can get up to 700kbs down). However, both computers did not come close to getting 3000/256 that Charter set. Also to add, I know that tweaking wont have better gaming results, but with my old computer i could play counter-stirke 1.6 and source better then my new computer mainly becuse of latency problems also whenever i try to play world of warcraft I get disconnected from the net right when i log into the world servers. (I know this could be a whole diffrent problem but just FYI) Lastly,i could only get the first connection whenever i tried to ping to any servers all the other hops were timed out. could charter be causing this?

i cant seem to fix this problem please give your imput.
i tired tweaking but didnt really notice that much.

My specs

Connection : Cable 3000kb down / 256kb up

ISP : Charter Communications

OS : Windows XP (SP2)

Direct connection : Linksys BEFCMU10 Ver.3 cable modem

Network Card : D-Link DFE-520TX (Latest Drivers)

Analyzer specs :
TCP properties for IP = xxxxxxxxx()
Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
Notes: Read the Analyzer FAQ if the above is not your IP address.

TCP options string = 020405b40103030301010402
MTU = 1500
MTU is fully optimized for broadband.
MSS = 1460
Maximum useful data in each packet = 1460, which equals MSS.

Default Receive Window (RWIN) = 384000
RWIN Scaling (RFC1323) = 3 bits (scale factor of 6)
Unscaled Receive Window = 48000

For optimum performance, consider changing RWIN to a multiple of MSS.
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your RcvWindow limits you to: 15360 kbps (1920 KBytes/s) @ 200ms
Your RcvWindow limits you to: 6144 kbps (768 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 52 hops

TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 01011100

Precedence (priority) = 100 (flash override)
Delay = 1 (low delay)
Throughput = 1 (high throughput)
Reliability = 0 (normal reliability)
Cost = 1 (low cost)
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