My virtual machine does no longer respond to HTTP and SSH requests. It is - however - still pingable. I have no clue what happened as I haven't changed any configuration files. I've tried rebooting the machine via the Web-Interface, but this doesn't seem to work for some strange reason. I've had the message "Operation in progress" for almost 1 hour now. Can somebody help?

It is possible that your server is one that was affected by yesterday's disk incident (see: http://iwi.gandibar.net/post/2008/05/16/Disk-problems ). Please contact Gandi's Customer Support if you would like specific information concerning your server: http://www.gandi.net/faq/form_contact_support/