*Update*

The Unix Server backup service has been restored.
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Previous Description (2011-04-04 10:28:35):

The software used to backup Unix Servers needs to be restarted to clear a lockup condition. User driven restores on the following machines is unavailable:

www.queensu.ca
www-dev.queensu.ca
jeff-lab.queensu.ca
post.queensu.ca
webapp.queensu.ca
webapp-dev.queensu.ca
library.queensu.ca

ITServices staff are working to correct the issue and restore service.