I have created a new howto in Zoneminder wiki for Debian 6 Squeeze 64Bits in spanish based in Ubuntu Server 11.04 Howto
Differences are:
No Lampp instalation need.
debian-multimedia repository to resolve the libfaac-dev error in ffmpeg compilation.
Some extra libs
Few changes in zm init.d script
Latest ffmpeg stable version
No edition is needed for zmdc.pl
Currently Im using a Bluecherry PV-155PA 16 Channels card also known as "Pico 2000". Woks perfectly with 8 cameras.
Only button not working is Probe that shows me: Unable to probe network cameras, status is '127'
Hope this helps. I couldnt include the link to howto 'cause forum thinks I am spammer.
Thanks.