Printer sometimes doesn't print

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http://askubuntu.com – I installed 12.04LTS and have a DeskJet 1125C connected through USB. The problem: Sometimes it does not print - in print jobs is status Pending/Processing but print does not start. I discovered if I print some documents then next document simply doesn't print with status processing or status pending. The only way is to disconnect printer from USB and immediately reconnect then works OK some times. (HowTos)