Running a report with the screen resolution set to 1280 x 720 causes the report to show on-screen with two scroll bars.
This caused by setting the "Rows Per Page" option in the report to 20 or 10 instead of 0.
This is only an issue with Internet Explorer 10.
It is working as expected in Chrome / Firefox.
This issue is resolved in Sage CRM 7.3 GA.