The outage of virtual private servers was caused by a bug in the 6.0.12 kernel (the stability issues I mentioned earlier).  It has been responsible for locking up four different machines in the last two weeks and was scheduled to be upgrade this Friday, however, since I had already put the new kernel on the machine but not booted into it, the virtual private servers are now all upgraded.  Hopefully 6.0.15 will have resolved the issue but we will not know until some time passes.