I have an HP 2015dn on my TC network. For the first few months it started printing, or at least the light started flashing, as soon as I hit PRINT. Lately it seems to be taking forever for the printer to acknowledge and print a document. Preview seems to be the worst offender as it might print 3 pages, then another 2-3 pages and so on. Any suggestions. Printing from a 2011 iMac with Lion.