googlebot detection problem

[eluser]Unknown[/eluser]
Thanks!!

I was just looking through my logfiles, and was wondering why they were full of bots(2 mill entries, with a majority being bots).
I was using something like:
if ($this->agent->is_browser())
{
writeLog();
}

Now I'm looking into using BrowseCap (http://code.google.com/p/phpbrowscap/)
as it seems to be more accurate and detailed.