As we reported here yesterday, Google Analytics has reported issues with April 2011 data when applying advanced segments, secondary dimensions, or custom reports.
As of this morning, this issue has yet to be resolved, although Google is working on correcting the issue.
The Google Analytics team will be providing an update on the issue on May 15th, as reported here: http://www.google.com/analytics/status#rm=1&di=14&ddo=1&hl=en.
We’ll keep you all posted on any updates as we get them.