I am running the developer version of Safari 5.2 (7536.2.3) on Lion 10.7.3 on Alu unibody MacBook (early 2009). The problem is that the delete button does no longer work as a back button. The normal back button (in the top left corner of the window) and the Cmd+ left arrow work normally.
Is this just a bug in the dev version of Safari? Or something wrong with my browser/system? I'd be grateful for any hint...