Zend just announced their PHP Conference and Expo. Unfortunately, they have chosen the same week in which OSCON Europe is already scheduled. OSCON is always my favorite conference each year, and I've been looking forward to OSCON Europe since I first heard about it.
This scheduling conflict may not affect many people (OSCON will be in Amsterdam, while Zend's conference will be in California), but I'm sure there are others in the PHP community who are in the same position. Perhaps openconf can help us avoid these situations in the future.