We got a few questions about this one so I thought it would be worth mentioning. Piotr @BBNews.pl let us know that RIM’s EMEA NOC (Network Operations Center) is experiencing intermittent SRP issues. BES servers are connecting and getting reconnected every once in awhile and RIM is working on resolving the issue.
This should mean that BES services are having issue but it looks like it might have leaked into delays for BIS email. We will let you know if we hear anything further.