Might be a good time to backup your drive before logs are rotated... At the time of your writting, you only have kernel.log as a boot time clue, and it will self erase.
IANAL but I'd suggest you go further and stop using your computer as soon as possible. Use linux to DD the drive onto a secondary backup drive as a bit for bit archive, put the existing drive in the possession of a third party and then start from scratch. Each time you use the computer you're damaging your credibility in a potential lawsuit.
