Hi Was wondering if anyone else has experienced this. I have a server using Xen and one using virtuozzo with the same supplier. I also have an EC2 instance that uses xen hypervisor. I have a Koha distro on the Xen server and I'm getting huge performance issues especially regarding mysql server hits. The file moremember.pl causes the cpu to go up to 100% and at the same time mysql starts to use 50% memory. I then see two 404.plprocesses just before the page eventually loads. Takes 30 secs just to load details of one patron. However if I port the same koha implementation to the only server not using xen virtualisation, the virtuozzo one, the problem vanished and page loads are 2 or three secs with no noticable cpu spikes. Has anyone ever came across similar issues with Xen virtualisation?