10:30AM EST: RAFians, I have contacted our host again, (30 minutes ago) asking what's up with the internal server errors. I'll post back when I have more information.
11:40AM EST: I received a reply from a supervisor:
As I'm sure you have noticed we have been having quite some problems with this server which are finally to end. Our administrators had to change few Web server options as well as to recompile the Web server itself which caused this error to appear. Please note that this can happen few more times today.
11:45AM EST: A announcment was issued:
To the attention of all customers. With regard to the laboured performance your server has been showing lately due to overload and other difficulties, we are glad to inform you that final resolution the problem has been found and your websites will be working flawlessly again after we take the necessary measures.
The procedure will consist of addition of new Hard Disk Drives to the server and re-organization of the customers' web hosting accounts, so as to better consume the server resources from this time ahead.
The maintenance will be carried out in the next two days. Several very short downtimes might be experienced during the hard disk addition, however we would like to reassure you that those will be worth your patience bearing in mind the final positive result.
Thank you very much for your understanding in this matter. We firmly hope that after this maintenance procedure the server will no longer experience problems of that kind.