My HP 2420 is taking so long to print a document. Seems like it pauses between each page rather than printing at it's normal rate. Any suggestion?

This could be a problem with the memory in your computer too many programs running at once. Go to start then click run in the box type msconfig this will open a system configuration box click on startup and uncheck programs you don't need running DON'T STOP the firewall or virus checker. Most programs don't have to run they will start when you click on them. after unchecking the ones you don't need running click apply and press OK your computer will have to be restarted and when it starts back up put a check mark where it says dont show me this message again. You could try more memory and always clean out unwanted trash and old files the link is below.

http://www.ccleaner.com/

Check your printer settings.
If the paper source is set to manual feeding and you are not manual feeding the paper, the printer can take a lot of time printing each new page as it waits for the paper to be fed and only after a while when the paper is not manually fed looks for paper in the normal tray.
If that is the case, change the paper souce to "automatically select " or to the right paper tray.

You can check and change the settings of your printer, by clicking on the Start button, then on Settings, Printers and then right clicking your printer and pressing Properties.

You can also change the settings from within a program, like MS Word: open the File menu, click on Print, select your printer and click on Properties; in Office 2007, click on the Office Button, then click Print, Print ... (1st choice) and Properties.