Another Debian release, another (almost fully) painless upgrade.

The only issue was with openvpn and me accidentally removing the custom ulimit call to increase max in-memory-locked value, which lead to openvpn failing with very strange errors (e.g. compression errors, handshake errors, etc.); I've only managed to debug it due to "t of memory" messages in syslog (due to lack of memory, it ate the first two chars :). After that, everything seems fineā€¦