That is odd. Everything looks fine for me in Firefox 5.0.1 on Windows 7 Ultimate 64. I see the missing data point in your screenshot, but I have no idea what could be causing it.
Flash and Java aren't factors here, so you don't need to worry about those. We're using a JavaScript (confusingly not related to Java in any way) charting system called
Highcharts. This could be a bug in Highcharts in the Firefox beta. If that's the case there's not much we can do about it on this end. Sorry about this hassle. We're relying on a whole stack of software to make Fuelly happen and quite a bit of it is out of our control.
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