I have a few reports embedded in visualforce page using iFrame. Due to this new release of Spring '14, iFrame has stopped working and now these visualforce pages show blank screens. Can anyone help me with a work around?
With Spring '14, Salesforce has really picked up the pace when it comes to their Analytics. The Analytics API is now available in Apex. Salesforce has also added a new tag,
Anyway, I would highly suggest looking into the Analytics API more. This should work a bit better than an iFrame for you. Peter Knolle has written some exceptional articles on the topic as well: