T61 Sound skips and glitches in XP

I am having the same problem discussed in this thread http://forum.notebookreview.com/showthread.php?t=141867 , but in windows XP SP2 Professional.

I bought a T61p with vista installed, bought a new hard drive, put it in, and did a clean install of XP. There is no MMCSS for XP, so I can't disable it and am stuck. The sound skips happen for everything WHILE ON BATTERY, system sounds, MP3's in itunes, SWF's, etc. I ran DPC Latency Checker and sure enough, when on battery, the latency consistently spiked to ~20000microseconds. I am not sure how to fix this, I have Notebook Hardward Control, and I tried it with and without that running, and on both Max. Battery and Max. Performance settings.

Any ideas.

I am not sure how long this has been going on for, I got the laptop around 5 months ago, I am guessing that it started happening about 1 month ago.

Attached is an image of DPC, first it was on AC, then I unplugged it, then I plugged it back in.

 

did you install a new driver for sound / ethernet / modem...... recently.
the high spike can be caused by a bad driver.

if you are already running dpc latency checker, you could try switching off one device after the other and see what driver / device causes the high latency.

 

i will try installing the newest wireless drivers.