I do keep paper files. Every year has a labeled box, and my 2010 box is ready to start holding files from this year. It would already have had some folders in it, but I discovered I was just about out of hanging folders, so had to get more (and found them on sale!). So tomorrow, the switchover will begin. I'll put the 2010 folders in the box for that year, and start making folders for 2011 to put in my file drawers for bills, medical records, credit-card records, and so on. While I'm moving the files, I might toss or winnow a few, but that is best put off at least until taxes are done, if not for several months or longer.
Later, I'll get my box from 2002 down from the attic, and go through it, maybe while watching TV. Anything without sensitive information will go into the recycle bin. Anything with something such as an account number will go into a stack for DS, the official shredder, to shred.
Tax info stays downstairs until I've gotten all the details from it that I need. I've been good the past year about logging many things right away on the computer, but I like to check them against paper documents before finalizing the figures. And I have to wait for 1099s before I can wrap up the info that I send to the tax preparer. Meanwhile, I will have set up tax folders for 2011, mostly empty at this point, so that if there is anything related to this year's taxes, I can put it into the correct folder.