I cannot select text on the bottom of each page.
I'm working on a long document in a custom paper size. Can't figure out if it's the custom size but things seem to have been misbehaving since I upgraded to Lion. Rather than being able to select text normally, there seems to be a cut-off about two inches from the bottom of the page. The pointer doesn't alter to indicate any change but when I try clicking nothing happens. If I click and drag, I get a gray rectangle instead of actual text being grabbed and an error beep if I try and start typing.
Any help appreciated.
EDIT: It's more like six inches from the bottom of the page. Pretty much I can't use the mouse on half of each pages of this document which is making editing almost impossible.
MacBook Pro, Mac OS X (10.7.2)