Hi, I've installed 10.6.4 Combo update but after restart I got this screen and everything stops. Tried verbose to see what is the problem but nothing happened. I think it's a kernel problem. I've backuped kernel via OSxTools and saved it before update, but how to take it back to where it should be?

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MSI 945PL Neo-F (2DIMMs)
Intel P4 3.06 GHz 1Mb L2
Gainward GeForce nVidia 7600GS 256Mb 128Bit
2 Gb Kingston DDR2 + 512Mb TwinMOS DDR2
Maxtor 160Gb => Mac OSX Snow Leopard 10.6.8 by Hazard
WDC 320Gb => Windows XP SP3
Realtek AC'97 Audio on board
USB Creative SB Connect with Logitech Z-5500