On my install Goals stopped to display. I don’t know, if it was after update to 1.9.0 or 1.9.1
I explain: On many widgets, e.g. Referers - Campaigns, there is the flag icon on the bottom of the list. By clicking on it the table with conversions and revenue shows up, but all numbers are just zeros.
This happened to all dates in past, even where numbers showed before.
The data is saved to the DB. On the page Goals - Goals overview, the conversions overview table on the other hand shows the data.