Tonight, August 22nd, between 9 and 10 PM EDT (Eastern Daylight Time) (August 23rd, 1-2 AM UTC - Coordinated Universal Time, formerly known as GMT - Greenwich Mean Time), I will be upgrading the current version of the phpBB forum solution (phpBB 2.0.22) to the latest stable version (phpBB 3.0.5, greatly improved - version 3.0 incorporates a professional-quality modular design, high security, multiple-language interface and complete layout customization, as well as a plethora of new features).
It should be a smooth and straight forward installation and migration and the downtime should be minimal. One of the few possible post-migration issues is related to the passwords conversion; due to the utf-8 based handling of passwords in phpBB3, it is not always possible to transfer all passwords. For passwords "lost in translation" the easiest workaround is to use the "forgotten password" function.