Hi,I think I just observed this bug in testing. The workaround I found was to delete all my printers. Actually, I have no idea why I have printers; I didn't have any until my system was updated as far as I know. Presumably some printer auto-detection occurred during my recent full-update, and some printers were detected from WAN.
Also, this bug should be classified as "Important" because the slowdown in Okular is severe.
Thanks.