Under both RedHat 5.1 and 6.0, the new lpr-0.44-0.5.2 and lpr-0.44-1 post multiple copies of a document to the queue when only one is sent, e.g. lpr paper.ps sends a copy and a few minutes later it does it again, and a few minutes later does it a third time. The daemon also dies under both 5.1 and 6.0 after multiple copies are posted.
Should be fixed in the 0.46-1 errata.