Submitted by mig5 on Sun, 16/01/2011 - 16:36
I did not know this until just last week. Seems everyone I've mentioned it to already did, so I thought I'd better prove my noobness in bulk to you all now by writing about it.
It seems when you crypt a password with htpasswd and use (at least) basic mod_auth in Apache, the crypt only takes the first 8 characters of your password for use in authenticating a user.