System Stats:
AMD Athlon 2800 @ 2.5Ghz
1Gb Corsair RAM
MSI KT4AV Motherboard
ATI Radeon 9600 - AIW
2Gb swappable memory
650Gb HD in 4 drives.
Possible Memory leak? If I left it alone, Im sure a stack dump would occurr, although I have never tested that theory. And nothing has been added, modified from my computer in the past 3 months. I have the latest drivers for my card, I've tried the Catalyst and Omega drivers, using driver cleaners, and such, also re-installed DX9, to no avail. This problem just started happening, one day out of the blue (mainly, once they put the xmas patch in).
No. No hacks, exploits, trackers were found on my puter. <--IT Tech.
Been doing some random testing about this prob.
I have shut off all non-essential programs while running GW, turned gfx settings down to low, and still,, periodically it will chunk down to about 1-2fps. I can alt+tab out of the game, and tab back in, so it redraws the gfx, and its fine.
**edit
I believe I've narrowed it down to Post Process Effects. If I turn that off, the intermitent lag "seems" to stop.. But there goes all the neat little lighting effects that Anet has done to make the game look oh-so-pretty.

Is anyone else having this issue? If so, please post.