I'm specifying a content source as an internal non sharepoint web site
e.g. http://internal.example.com
However a full crawl only ever crawls 22 pages in the root of the web site (there are 100), unless i specify 'Custom - specify page depth and server hops:' and leave the 'Page Depth' and 'Limit Server Hops' as Unlimited
Which then makes the crawl go mental!
Update: I'm using MS Search Server Express 2008