A new problem, again on Windows 7 Ultimate.
As soon as Acronis True Image started to run a background backup task, my computer froze completely, the media player started stuttering on the last packet it got from the webradio station I was listening to, and I couldn't move my mouse even. The client was running & going along fine before this happened.
I had to hold the power button & shut down the computer suddenly to escape the condition.
It's the first time ever that the computer has crashed at all. And the only thing that changed today was that I had installed BitShares X in the morning. So of course it's the prime suspect.
I'm running the TrueImage task again, and all is well now- the client is resync'ing at the moment, I don't know if that has anything to do with it.
I'll report back later if it happens tomorrow when Acronis starts up again. However I have the feeling it was a random, intermittent event.