With no apparent reason and randomly the mouse cursor get mad (and me aswell) and jumps up and down, get fixed at top or flickers the taskbar and other menus and sometimes when I click the active window it may move anywhere.
I can move it horizontally but impossible to click where I want. This happens with just power up or any number of applications running and it occurs for few seconds or several minutes and for each few minutes or one hour fine and then again and stop and again. No matter any system activity or not, sometimes begins at start up or some minutes or one hour later. It's crazy... and I'm not used only with the keyboard.
I've been trying everything: uninstall gigastudio (regarding posts), norton, SFP, devices, reinstall XP (no format), all drivers, Bios update and here a new problem appears, even disabling pnp, now, I cannot setup irqs in bios , so my 3 cw boards are "default" always at 20, 22 and 23 when before I just had got 16 irqs and 3 boards into irq 10. (unpredictable things)
Anyway, the system is running well, when the cursor gets normal, obviously.
Can someone help me about this, please?
btw, P4 2.4, psu360v, P4B533, G550 dh/2crt17, pci lan, XPpro acpi/usual tweaks, 2xpulsar2+luna2, no shares, no conflits, no fun...

...and just 1 little stop during this. Thanks!