UPDATE:Upgrade completed, systems back online. Our Reviews system will be offline for awhile (hopefully only a few minutes) while we perform a major upgrade to the internal code. This also requires that we temporarily disable the forum so as to minimise database load during the operation.
The upgrade is important for future development and shouldnt change the existing design of the system, although there might be the odd bug. The actual process is quite straightforward, yet there is scope for serious errors to occur, hence the added precautions.