When I logged in to say hi to the KHarma Trolls this evening, I happened upon the following server alert message. Please read it and be prepared for a short server downtime in the wee hours in the morning. (Well wee hours in my time zone)

On 8/04/05 at 4:00AM PDT we're going to be restarting all World of Warcraft realms in order to apply a hotfix that will address an issue which was at times preventing groups from joining the same instance. Each realm should be down for no longer than fifteen minutes, and we expect that the entire process should take appoximately two hours. We'll provide another update when the process to restart each realm is complete.