MY COMPUTER FREEZES SOLID--

With v1.6.8a, mining CryptoNight worked well, without a sluggish computer response while trying to do other tasks.  However, I have found my computer completely frozen a couple times, no mouse movement, no clock increment, no response to ctrl-alt-del.  I love the system, with the web-interface and console stats.  But, it is still a bit raw.       --scryptr