I use a dedicated server with 12GB memory and 4 core CPU with Ubuntu 12.04 LTS (x64). This not just a database server. MySQL appears to be restarting frequently, I think I can tune the config to prevent this. But I dont know how.
I can post the config if you'd like.
mysql -V mysql Ver 14.14 Distrib 5.5.28, for debian-linux-gnu (x86_64) using readline 6.2