- problems with the MediaWiki software
- problems with templates and other local issues
To give you an heads-up, there will be an IRC meeting on Monday at 18:00-19:00 (UTC) (See all timezones). Roan and Trevor will be available to help out by answering questions and informing you about what will break and why.
It is your opportunity to help ensure that the upgrade of your wiki will go smoothly.