I've been following many of the topics here about the problems with ver. 19.5.0.145 and wanted to avoid the issues until they had been resolved. So on my 3 PCs running NIS 2012, I turned OFF the 'Automatic Download of New Version' option several days ago.
This morning, when I power up my systems, this version was downloaded & installed on only one of them... a WinXp Pro SP3 desktop, at 7:37am ET.
Why? How? Is this a bug with the option? Does it not work? And how do I go back to the previous version?