We have seen some very strange Analytics issues of late. For some reason April data is showing wildly different results depending on if you have Advanced Segments selected or not, or if you are within the Adwords section of Traffic Sources.
For example here we have a screenshot of All Visits clearly showing traffic for April:
Now here is a screenshot with a PPC Advanced Segment selected:
We have seen a Blog pos on the Google Anlaytics blog that addresses this. Hopefully resolved soon.
[hana-code-insert name=’Social Icons’ /]