I have a problem with my USB Pendrive

I disable the USB legacy support on the bios , for get the usb port work with my pendrive in 10.5.2 rev1 , but my pendrive(sandisk crucer micro 2gb) now don't work in 10.5.2 rev2

Thanks Zeph Great work.

My Specs
Motherboard ASUS A8N-VM CSM
Nforce 4 Chipset
1.7 GB ram
3 Sata HD (2 Hitachi 160GB / 1 Samsung 250GB)
1 IDE Seagate 60GB
LG DVD Writer / Lite-on CD-writer
MSI Geforce 8400 GS 256 MB
USB keyboard / Mouse
OS: Windows Vista,XP, Mac OSX zeph 10.5.2 rev2 (IDE) /MBR EFI v8

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Motherboard:MSI K9A2 Platinum
Processor: AMD Phenom 9850 BE OC 2700
Memory: 6GB Corsair Dominator DDR2 1066
HD SATA 260 GB (Vista) , 160 GB (XP), 30GB IDE (MacOS)
DVD-Writer Lite-on IDE
Graphics: PNY Geforce 8800 GT (QE not sopported)
Audio: ALC888/ALC888T 3ch (working)
OS: XP /Vista 32 /MacOS X LawlessPPC 10.5.4