Flakey USB 2.0 PCI cards

I bought 2 CompUSA PCI/USB 2.0 cards [ALI Chipset] on sale. Both installed
fine under Windows XP Sp2 [one in a Sony Vaio and the other a Compaq
DeskPro]. Worked OK for a few weeks. Now neither reliably recognizes
devices which appear fine in the USB 1.1 ports. Doing an uninstall of all
USB devices from Safe Mode did not help.
I'm perplexed.
I have no desire to spend overspend on a name brand card but suspect the
cards themselves.
Any comments or sloutions?
Thank you.



--
Remove -NOSPAM- to contact me.


.