Total network hashing: 1,747 Ghash/sec
Either the network strength has significantly increased in the past week, or one of those two sites shouldn't be trusted. Your source looks more reliable.
won't (initially) be susceptible to viruses and malware
Well, now, I wouldn't speak too soon. There will undoubtedly be a beta release or a leak which will give malware authors ample time to develop zero-day viruses. And with Windows 8 exploring very different terrain this time around, there's bound to be a plethora of exploits just waiting for someone to coax them out of hiding (or plain sight).
If all else fails, lower your standards.