I print from LR2 using a Canon IPF-5100, with Ilford GFS and have always been happy with the results. I recently received a new batch of 13x19's, loaded some sheets in the tray and began the process of running off a few prints for some customers.
Wow...this print look awful. What's up? So, I checked the settings in the driver and made sure the correct ICC profile was selected. Looks fine. Let's try again. Another terrible looking print emerges. What the heck is going on here? I go back through all of the settings that could possibly impact this and run yet another print. Same crappy results.
A bit frustrated, I'm staring down at these prints, trying to figure out what possibly could be going on and it hits me...I've inserted the paper upside down in the tray.
Ever have one of those days? Sheesh.