Yes, the problem with the weekend crashs it takes quite long to get the right people from the technical support. But fortunately I was able to get some. We did some changes on the configuration and I hope it will make slightly better but I assume we perhaps will have to get a new server with more RAM, the current one seems to be a bit outdated.
If the issues continue to occur, I will upgrade to a new machine but as meintioned already this will take some time (2-3 months) to prepare. So I'm sorry in advance for the possible troubles on this site.
Thanks for you understanding.