Is there any way to purge failed deployments? I've had to do a few from Eclipse ahead of a massive Inbound ChangeSet, and a few failures occurred in the process. There's no particular reason other than my own OCD (I don't particularly want to look at a bunch of failures for the next 90 days) and that it freaks me out during deployments when I glance at the page and see failures, only to realize they are historical failures...
Currently there is no way we can delete the DeployRequest records in salesforce as Sys admins would want to keep track of everything being deployed into their Production ORG and for customer's to be SOX Compliant.(Though it can be tracked in Audit trail)
A funny solution to your problem would be to Validate a successful package 10 times, so that you will not see the failure records on the main deployment status page :)