his morning, at about 01:58, Karchan went down. To be more specific, Glassfish, the application server, went down as it was short of Memory.
I have since restarted it, and provided it with an additional 400 megabytes of memory. It should run smoothly again.
However, there is a chance that there is a memory leak somewhere, slowly claiming all memory. When that happens, we will see the same behaviour.
Let me know when it does. I'll see about checking out where the memory leak is.