I had some problems too, after updating from 7.1 to 7.1.2, it crashed a couple of times, some mysql errors or something related to downgrading hddtemp I think. Haven't looked into it, it seems to bee stable now, and realy usefull. Since this upgrade I had problems with graphs not updating when changing time-scope and pressing go. But after refreshing the page, F5 + Retry, the new graphs show up. Same thing since going to 7.1.3.