the first line says "version mis-match between kernel and cpu", so i think you should try another kernel, maybe the one that used to work for you before the update. 10.4 update installs a new kernel, so maybe that's the problem.

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CPU: AMD Athlon 64 X2 5000+
RAM: 2 x 1 Gb
2xSATA HDD
ATA DVDRW
MB Asus M2N Nvidia MCP61
Video: GeForce 8600 GT 256 Mb RAM
ADI 1988 onboard audio
Audigy soundcard
Realtek lan