If you plan to run Google's latest toolbar with your browser, you'll need to use something other than Google Chrome. As quirky as that sounds, here's the message Chrome users are receiving when trying to pair the two together:
"We're sorry, but Google Toolbar 5 is only available for Internet Explorer and Firefox."
It should be pointed out that if you're rocking with Chrome, you probably don't need the Google Toolbar anyway, but regardless, we can't imagine pushing users -- even a small fraction of them -- to competing products is the best idea.
For you Chrome users wondering if you're missing out on all the fun, the Google Toolbar offers Google search, bookmarks, search suggestions, Web history, and shortcuts to Google apps, or pretty much everything that comes built into Chrome already.