Your account is located on Johnny which is our experimental server which means that it can experience high load quite frequently. Looking at the server monitor http://heliohost.grd.net.pl/monitor/ you can see that Johnny has been having some pretty high load lately. Keep an eye on the image below because logging in might time out or fail if the load is above 10-15:
Our stable servers, Ricky and Tommy, don't experience these high load spikes so uptime is a lot higher.