Sbc Yahoo DSL

1. Your Tweakable Settings:
Receive Window (RWIN):    69120
Window Scaling:    1
Path MTU Discovery:    ON
RFC1323 Window Scaling:    ON
RFC1323 Time Stamping:    OFF
Selective Acks:    ON
MSS requested:    1440
TTL:
(less any hops behind firewall)
   62
TTL remaining:    49
TOS/TOS subfield:    0
TOS/Flags:
   2. Test Download
Actual data bytes sent:   1048481
Actual data packets:   730
Max packet sent (MTU):   1480
Max packet recd (MTU):   1480
Retransmitted packets:   17
sacks you sent:   116
pushed data pkts:   91
data transmit time:   14.135 secs
our max idletime:   315.5 ms
transfer rate:   70513 bytes/sec
transfer rate:   564 kbits/sec
transfer efficiency:   97%
   3. ICMP (ping) check
   Minimum ping: 85.72 ms
Maximum ping: 168.18 ms
Ping stability:
86.08 85.83 85.72 86.30 86.62 86.22 94.87 122.22 137.98 168.18

Notes and recommendations:
RWIN is in range
Looking good

Observations:
Good data stream (no/few rexmits)

Observations:
Looking good

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::::::::::.. Download Stats ..::::::::::
Download Connection is:: 2538 Kbps about 2.5 Mbps (tested with 2992 kB)
Download Speed is:: 310 kB/s
Tested From:: http://testmy.net/ (Server 1)
Test Time:: 2007/07/08 - 9:12pm
Bottom Line:: 44X faster than 56K 1MB Download in 3.3 sec
Tested from a 2992 kB file and took 9.657 seconds to complete
Download Diagnosis:: Awesome! 20% + : 27.54 % faster than the average for host (pacbell.net)
D-Validation Link:: http://testmy.net/stats/id-AO8ZB21SQ
User Agent:: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4

Ok so testmy.net test shows good speeds. Like 500kbs below advertized.
Now. I've noticed that a lot of my other downloads go slow! Like 80kB/s. I'm not sure why. I use a dlink 624 router. Firmware is up to date, i set my computer to dmz, and changed the ip of the router to a different one so the modem and router don't interfere. I also seem to get these pretty frequent disconnects (as either my router or modem fail, restart and go back online). Anyways, I run NOD32, I have windows defender, spybot s&d, adaware, spyware blaster, super ad blocker and spyware doctor. I try to keep my pc clean and defragment. I'm going to try to install cablenut now and use the one of the dsl 3000/500 packs or something like that. But anyone have a clue why I get this poor performance and disconnects?