Windows XP Home. Panasonic Laser printer. Tried to print a pdf file but the output was nonsense, (random characters). Tried to stop the printing using the print monitor (Start>Printers etc), by Cancel print jobs. I cannot now print anything, as this job seems to be blocking everything. Cancel Print Jobs does nothing, switchaing off the computer and/or the printer does ot fix it. Is there any other way that I can force the print buffer to empty. It appears to be a problem on the computer side as connecting a different printer has the same problem.