Absolutely the wrong advice to give. it's partly due to 'truisms' like this that allows botnets to exist at all.
1. there is no evidence to suggest there is any malware involved.
2. there is no evidence to suggest the PC is the source of the problem.
3. there is no evidence to suggest malign or benign external influence is causing the reported behaviour.
4. There has been no mention of any methodical diagnosis of the problem.
If you actually read my advice and suggestions - and indeed the whole thread, rather than trotting out your well-worn 'fix' you'll note the following:-
There has been no determination of the cause of the symptoms, there has been no determination as to which device is causing the symptoms, there has been no documented effort to isolate the suspected device to determine if the symptoms are network or device induced.
Again, if you actually read my comments, you'll note that I suggest the issue COULD be due to a faulty or damaged trackpad or keyboard - amongst other causes. Until some effort is made to determine the cause, then any and all possibilities are equally valid - hell, for all I know, it could be an errant cat walking across the keyboard and moving the mouse... until some effort is made to rule out possible causes, it's just as possible as anything else.
So PLEASE, stop trotting out your own pet fixes, they do nothing to help without any evidence based diagnostics.
As to the comment from 'bomberman', if you care to educate yourself a bit, you'll find out that some of the best hacks have resided inside commercial and governmental systems for years without detection. Just because there is no visible 'cost' does not mean there is no intrusion.
Good advice from 'flippery' and 'ggremlin' in my opinion.
Edited by 10forcash (Wed 22-Jun-16 20:26:34)