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I have posted on 4 difrent sites and no one seems to be able to help...have used cablenut and some reg tweaks...no help. I run winxp no service packs,up to date,sysgate firewall avast anti virus spysweeper no virus no spyware even scanned in safe mode....my advertised speed is up to 4000Kbps...have been up to tech 2 with adelphia many times no help....they give me bullsh*t about how to internet is to crowded now....basicly they dont know...did test on nitro heres the results TCP/Web100 Network Diagnostic Tool v5.3.3d click START to begin Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 367.23kB/s running 10s inbound test (server to client) . . . . . . 1.53Mb/s Your PC is connected to a Cable/DSL modem Alarm: Duplex mismatch condition exists: Host set to Full and Switch set to Half duplex WEB100 Enabled Statistics: Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done running 10s outbound test (client to server) . . . . . 467.46kB/s running 10s inbound test (server to client) . . . . . . 1.53Mb/s ------ Client System Details ------ OS data: Name = Windows XP, Architecture = x86, Version = 5.1 Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_06 ------ Web100 Detailed Analysis ------ Cable modem/DSL/T1 link found. Link set to Full Duplex mode Information: throughput is limited by other network traffic. Good network cable(s) found Normal duplex operation found. Web100 reports the Round trip time = 168.71 msec; the Packet size = 1452 Bytes; and There were 9 packets retransmitted, 246 duplicate acks received, and 432 SACK blocks received The connection was idle 0 seconds (0%) of the time This connection is network limited 99.97% of the time. Web100 reports TCP negotiated the optional Performance Settings to: RFC 2018 Selective Acknowledgment: ON RFC 896 Nagle Algorithm: ON RFC 3168 Explicit Congestion Notification: OFF RFC 1323 Time Stamping: OFF RFC 1323 Window Scaling: ON Information: Network Middlebox is modifying MSS variable Server IP addresses are preserved End-to-End Client IP addresses are preserved End-to-End (SenderTrans/sec > 30) [0.1>30], OR (mylink <= 10) [3.0<=10] Checking for congestion (cwndtime > .02) [0.99>.02], (mismatch = 0) [0=0] (MaxSsthresh > 0) [30492>0] estimate = 2.41 based on packet size = 11Kbits, RTT = 168.71msec, and loss = 7.44602E-4 The theoretical network limit is 2.41 Mbps The NDT server has a 8192.0 KByte buffer which limits the throughput to 379.34 Mbps Your PC/Workstation has a 99.0 KByte buffer which limits the throughput to 4.62 Mbps The network based flow control limits the throughput to 2.82 Mbps Client Data reports link is 'T1', Client Acks report link is 'T1' Server Data reports link is '10 Gig', Server Acks report link is 'Ethernet ..................................have been running test on every possible site and always around 1500Kbps. Also this is my only computer...no router etc...Please try help me...Im about to jump off a roof also heres the speedguide.net test results TCP options string = 020405ac0103030101010402 MTU = 1492 MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput. MSS = 1452 MSS is optimized for PPPoE DSL broadband. If not, consider raising your MTU value. Default TCP Receive Window (RWIN) = 102200 RWIN Scaling (RFC1323) = 1 bits (scale factor of 2) Unscaled TCP Receive Window = 51100 For optimum performance, consider changing RWIN to a multiple of MSS. Other RWIN values that might work well with your current MTU/MSS: 511104 (MSS x 44 * scale factor of 255552 (MSS x 44 * scale factor of 4) 127776 (MSS x 44 * scale factor of 2) 63888 (MSS x 44) bandwidth * delay product (Note this is not a speed test): Your TCP Window limits you to: 4088 kbps (511 KBytes/s) @ 200ms Your TCP Window limits you to: 1635.2 kbps (204.4 KBytes/s) @ 500ms MTU Discovery (RFC1191) = ON Time to live left = 50 hops TTL value is ok. Timestamps (RFC1323) = OFF Selective Acknowledgements (RFC2018) = ON IP type of service field (RFC1349) = 00000000 (0)