After updateing to lion you’ll probably want your User-Library folder back in finder. It’s hidden by default.
You have 2 options:

First, you can press the options key while clicking finder’s got to menu and the hidden folders will be shown.
For a permament visible Library folder in Finder please open a terminal window and type:

chflags nohidden /Users/[yourusername]/Library/

If done you’ll see your Library-Folder in Finder again as you’re used to.