Random high ping and quirky internet experience

[chaase]

This is my first time posting here, so Hi :]

anyways, I have been having some issues with my internet and this has been around ever since i started the service 3 months ago. I bought comcast internet for gaming reasons mostly and when I am playing a game usually I will get really high ping. Up to about 500 and then after about 5 seconds of lag it goes away. A day or so ago it was really bad and my ping didnt go down for hours. I called comcast and they had someone come out to my house. The guy said that there was noise in the line. So they replaced the cable going from the telephone/power pole to my house. That actually didnt fix anything and the tech even said that it is not much different from before. I noticed after he changed the cable that my browsing experience is now much more quirky. Certain things on webpages wont load, like small images and some js/java related things(like mlabs) or they will load, but in chunks. It wasn't choppy like this 2 days ago.

I dont know how else to diagnose this problem and it may be out of my control, but that is why Im posting here so I can find out.

Here is some info about what I have tried and my internet and network:
-Comcast ~24down and ~4up
-Only one computer on the network
-Modem+Router set up: motorola sb6121+linksys e2000
-I have tried power cycling.. doesn't help
-No other programs sucking bandwidth.
-Antivirus is avast free version, if that is needed.
-[fixed and posted] mLabs wont run now after the guy changed the cable for some reason [fixed]
-speedtest/pingtest are normal to good
-Reset the router config
-the first line in cmd > 'tracert www.google.com' is <1ms

[chaase]

So I think the choppy browsing was resolved when I cleared my cookies and history. I still get the very high ping randomly though. I usually notice it during gaming, but it does happen during browsing as well.
Should I use the TCP optimizer tool?

These are my m-lab results:
Your system: Windows 7 version 6.1
Java version: 1.6.0_31 (x86)

TCP receive window: 65536 current, 65536 maximum
5.0365E-5 packets lost during test
Round trip time: 11 msec (minimum), 32 msec (maximum), 22.66 msec (average)
Jitter: 21 msec
0 seconds spend waiting following a timeout
TCP time-out counter: 223
1 selective acknowledgement packets received

No duplex mismatch condition was detected.
The test did not detect a cable fault.
No network congestion was detected.
No network address translation appliance was detected.

0.067% of the time was not spent in a receiver limited or sender limited state.
92.66% of the time the connection is limited by the client machine's receive buffer.
Optimal receive buffer: 67108864 bytes
0 duplicate ACKs set



ADVANCED m-lab:
WEB100 Kernel Variables:
Client: localhost/127.0.0.1
CurMSS: 1460
X_Rcvbuf: 87380
X_Sndbuf: 172592
AckPktsIn: 1758
AckPktsOut: 0
BytesRetrans: 1460
CongAvoid: 0
CongestionOverCount: 1
CongestionSignals: 1
CountRTT: 1754
CurCwnd: 67160
CurRTO: 223
CurRwinRcvd: 65536
CurRwinSent: 5888
CurSsthresh: 95681100
DSACKDups: 1
DataBytesIn: 0
DataBytesOut: 29378396
DataPktsIn: 0
DataPktsOut: 19855
DupAcksIn: 3
ECNEnabled: 0
FastRetran: 0
MaxCwnd: 67160
MaxMSS: 1460
MaxRTO: 224
MaxRTT: 32
MaxRwinRcvd: 65536
MaxRwinSent: 5888
MaxSsthresh: 95681100
MinMSS: 1460
MinRTO: 214
MinRTT: 11
MinRwinRcvd: 4096
MinRwinSent: 5840
NagleEnabled: 1
OtherReductions: 1
PktsIn: 1758
PktsOut: 19855
PktsRetrans: 1
RcvWinScale: 7
SACKEnabled: 3
SACKsRcvd: 1
SendStall: 0
SlowStart: 86
SampleRTT: 22
SmoothedRTT: 23
SndWinScale: 8
SndLimTimeRwin: 9327547
SndLimTimeCwnd: 674067
SndLimTimeSender: 64889
SndLimTransRwin: 12
SndLimTransCwnd: 22
SndLimTransSender: 27
SndLimBytesRwin: 27920200
SndLimBytesCwnd: 1059680
SndLimBytesSender: 398516
SubsequentTimeouts: 0
SumRTT: 39739
Timeouts: 1
TimestampsEnabled: 0
WinScaleRcvd: 8
WinScaleSent: 7
DupAcksOut: 0
StartTimeUsec: 398501
Duration: 10070523
c2sData: 6
c2sAck: 6
s2cData: 8
s2cAck: 4
half_duplex: 0
link: 100
congestion: 0
bad_cable: 0
mismatch: 0
spd: 23.35
bw: 69.28
loss: 0.000050365
avgrtt: 22.66
waitsec: 0.22
timesec: 10.00
order: 0.0017
rwintime: 0.9266
sendtime: 0.0064
cwndtime: 0.0670
rwin: 0.5000
swin: 1.3168
cwin: 0.5124
rttsec: 0.022656
Sndbuf: 172592
aspd: 0.00000
CWND-Limited: 641.26
minCWNDpeak: 7300
maxCWNDpeak: 67160
CWNDpeaks: 1

The theoretical network limit is 69.28 Mbps
The NDT server has a 84.0 KByte buffer which limits the throughput to 58.12 Mbps
Your PC/Workstation has a 64.0 KByte buffer which limits the throughput to 22.06 Mbps
The network based flow control limits the throughput to 22.61 Mbps

Client Data reports link is 'OC-12', Client Acks report link is 'OC-12'
Server Data reports link is 'OC-48', Server Acks report link is 'T3'

[chaase]

Downstream:
SNR: ~36db
power level: ~6

Upstream:
power level: ~44