We were all using IE, but it didn't autozoom at all. We have since switched to Firefox and it seems to work better but the font is very blocky where as IE is very smooth and looks better but doesn't function right.
Also I found out that when we run a report in IE we had to hold down the 'ctrl' key to keep the pop up window on the screen so we could see the report, but in Firefox it just works and opens excel.
It definitely seems it was coded for FF and not IE.