As the title says, there seems to be a bug in the profile reputation graph. This is in regards to the lower of the two graphs, and happens in IE 10.
The bug is that I am unable to change the range by dragging across the chart.
It seems to work in FF and Chrome on the same machine. It also works in IE 9 on another machine (Windows 2008 R2).
My non-working environment, more specifically, is: Windows 7 SP1, IE 10.0.9200.16618 (with update 10.0.6). Update - The bug seems to only happen with a non-standard zoom setting (125% or above) in IE10. I did try non-standard browser zooms in FF and Chrome on the same machine, as well as IE9 on my other machine and these all work.
Here's a picture of the graph on Stack Overflow, and the bit that is not change-able/ drag-able: