tedster - 9:50 pm on Sep 26, 2010 (gmt 0)
Google has communicated:
A small subset of users are seeing a "too many redirects" error when attempting to access Google Webmaster Tools. We are aware of this issue and are looking into it. In the meantime, you can access Webmaster Tools directly though the URL https://www.google.com/webmasters/tools . Thank you for your patience.