Random Reboots?

Are you overclocked to high?
Maybe clearing Dalvik and cache and/or reinstalling the ROM you're using.

 

I don't think it's an overclock issue as mine did the same thing the other night, All Stock....Interestingly enough, It also was charging. After that it started acting weird. Seemed a tad slower, WIFI which worked fine for several weeks began to not want to connect when I woke it back up, at which point I was forced to toggle the WiFi. All of these things that were non existent before it crashed and rebooted. Afterwards it wanted to send a Error Report to HTC. I'm still within 30 days of purchase, So I'm just going to take it back for another one even though it may just be in my head, Who knows.

 

My phone rebooted this morning, also while charging. Noticed it when I heard that god awful vm start up. It was kind of strange because I use silent boot to get rid of it. It asked me if I wanted to notify HTC because of the reboot ( I did) by the way, I am running stock.

 

i have been having similar issues. my phone has slowly gotten more laggy over time and my battery is getting a lot worse. im about to try to flash the RUU and start from scratch to see if my issues will get solved.