The only problem that I have with webalizer is that while it tell you how many 404 requests have occured in the month, it cannot tell you what pages people were trying to get when the 404 happened.
I have also had an older version of webalizer hiccup when I tried to set up too many groupings. I don't know how the newer version does, since the ISP I'm hosting with is tardy on their upgrade.
