January 29th, 2008 | Published in Gmail (Google Mail)
First off, this update is only for those of you who write or run Greasemonkey scripts. If you don't have any third-party extensions installed or don't know what we're talking about, you can ignore this post.
Ok... looks like some of you are still reading.
If you're the author of a Gmail Greasemonkey script, you should be able to work around the update by changing the window object used -- Mihai P. posted an update to his Macros script on Friday. If you are accessing the "gmonkey" object via a different mechanism, then you can reference it using top.js.gmonkey for now, and an update will be pushed this week that creates an alias in the main window's context.