You might have noticed that this server is unreachable at times.
This problem is well known: the server simply runs out of RAM.
With 256 MiB of RAM, the server quickly hit the swap, system load is increasing and keep on thrashing until the OOM-killer comes into play and happily kill processes.
This will soon come to an end: i got a new server recently with 2 GiB of RAM (w00T !!) and now i’m busy preparing it carefully.
Please be patient… 🙂