got a problem after installing kernel_9.2_sleep yesterday

i don't know what kernel was there earlier.i used zep's AMD 10.5.2 release rev.1

problem is not able to mount usb drive .. it is detected but not mounted..?

help me to revert it back.pls

Note: Oops i don't have the MAC DVD right now !

-demigod-

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MAC OS x : Yet to figure out version.
CPU:AMD E-350D APU MOBO:GA-E350N RAM: 4GB 1333Mhz GPU: AMD Radeon HD 6310
HDD:Seagate 160GB SATA DVD-RW: Transcend USB Burner USB Mouse & Keyboard
WebCam: Logitech C910

Chipset:
AMD Radeon HD 6310
North Bridge: AMD A45 FCH