[CentOS] EXT3-fs error (devive dm-0) in start_transaction: Journal has aborted

Thanks to all for your suggestions.  I was away from the office all  
day today, and will only be there briefly tomorrow before going on  
vacation for a week.  So I won't get a chance to try out all your  
suggestions until I get back a week from Monday.  I am sure that the  
system will hang in my absence, but there is not much I can do about  
that (other than shutting it down).

Alfred