Thank you Howard14 for asking the question.
Apparently, avast! implemented a new function, and "opted us all in."
I had a snapsomething file almost 1/2 GB and 69 fragments that wouldn't coalesce. Whatever the new function is, there has to be a better way.
Surely, Eddie, you meant to say: on SSD's defrag is obsolete? My computer becomes a basket case if my NTFS drive is not kept defragmented. Recommend Piriform Defraggler by Piriform. I like it so much and the advertising is so innocuous, I should remember to check Piriform for other interesting utilities.
Of course, thanks to Skakara and bob3160 for the answer to the un-deframentable file. After un-checking and rebooting, I'm able to achieve 0 fragments again, which lasts for a few seconds.
avast! has to find a better way. Some people maintain their computers, and a file that won't defrag gives us hives. I wonder if this is going to need to be unchecked every time the program updates.
I guess I should ask what function I turned off by disabling Secure Virtual Machines? In Programs and Features, the "Setup" window that opens for un-checking the checkbox has a question mark in the corner, but it doesn't offer any information.
I hope Howard14's blue screens go away. But in my limited experience, a big, fragmented file will not be sufficient cause for such instability. I might recommend some RAM testing, check the S.M.A.R.T. report for your hard drive, try to get through some online malware scans, wiggle all the connectors inside the computer to assure they're all tight. Install temperature-monitoring software for CPU and hard drive, and anything else you can monitor. Swing a plastic chicken overhead while tapping your tummy...
-neil-
PS. I wish the Navy Blue were darker...