The TextDrive people survived a Slashdot, and switched to lighttpd as the web server while taking it.
I have been playing w/ lighttpd and php-Fastcgi for the last few days on my home server/development machine, and the initial impression is very good. It seems to do everything I am using Apache 1.3 for on mother, so I am considering its deployment on mother for production.
Yeah, trying to squeeze all the performance out of mother, despite the much faster machine we now have.