FF is correct - I just switched my bank account to one I don't keep a lot of money in.
Paypal has been known to "link" your account with one they want to get money from - say someone owes them money and PP can't get it. Maybe you and this other person signed on from the same library computer once upon a time - VOILA, your accounts are now "linked" according to PP and the money will be coming out of YOUR account until you fight it. Outright thievery if you ask me. Doesn't happen often but be aware.