The danger of old source trees
About a year and a half ago, I was playing around with Tomcat source trying to customize some things (work, don't ask). Well, I merrily forgot all about that, until today...
I attempted to get a newer version of tomcat running on that same machine.. it kept giving me really odd errors.. Couldn't figure it out, until I ran a trace on what it was doing.. Low and behold.. It's using the old hacked-up source I haven't touched in over a year instead of its nice, shiny new jar files.
rm -rf and problem fixed.. but in the meantime, several hours of debugging nightmare..