This just keeps getting worse and worse. Now, when I try to change the view settings of a folder, its parent folder's view settings change simultaneously. I can literally drag the icon size adjust slider for one of the windows, and watch both windows' icons scale in tandem. In fact, I can't alter either window without one reflecting the other's changes. On top of that, somehow all of my icons for those windows are squeezed together as if I had a very tight grid spacing, even though the grid spacing slider is maxed out.
{ Insert every foul epithet you can imagine, screamed through a bullhorn, here. }
Also, with all due respect to the many thoughtful people who have posted workarounds here, saving a backup of invisible .DS_Store files and using the Terminal to restore them, or running an AppleScript to automate the process, is not a reasonable solution. If I'm going to be doing that sort of thing, I might as well be operating entirely from the command line, or running DOS. The simple fact is, Lion's Finder is very poorly programmed, and the only real solution is for better programmers to fix its many problems.