From time to time Sophos connects to the net and downloads the latest signatures. (I assume that's what it's doing.) When this happens, I can hear my hard drive running. But this morning I was seeing the little downward bouncing arrow, yet the HD was not running. This went on for a very long time. Much longer than a download of the signatures normally takes. I was concerned, and finding no way to cancel the download (the "Cancel Download" selection was greyed out and not clickable) I used Activity Monitor to kill the process. I presume it will start up again next time I reboot the computer, but I don't want to do that until I know why it was behaving this way.
Can anybody tell me what's going on? Should I be concerned?
iMac 5,1
OS X 10.6.8
Chrome browser
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