I'm not sure if I have a problem

Late Tuesday night into Wednesday morning, I got somewhere between three and maybe as many as seven file warnings, in three sets, from Avast on my home computer (running Windows 7). They were labeled Win32:Evo-gen [susp]. I think they were in a system directory and may have been temp files. I’ve gotten warnings for websites before on occasion with nothing bad happening afterwards, but I was not consciously trying to download anything at the time and it was a file warning. I was very tired at the time and didn’t manage to do much aside from google the threat name (but I didn’t get to avast-specific information then that explained that this is apparently a generic warning) and look through the running processes–nothing was obviously awry there; everything looked legitimate. (although I googled some of them to check, and there were reports of a virus possibly masquerading as one of the system processes). I had accidentally clicked on a link a bit earlier to what I believe to be the site at this search result earlier, but I did close it as soon as I realized what it was:

http://r.search.yahoo.com/_ylt=A0LEV7k2KlVV1FUAlfMnnIlQ;_ylu=X3oDMTE0N2toYzZyBGNvbG8DYmYxBHBvcwMzBHZ0aWQDRkZYVUkyMV8xBHNlYwNzcg--/RV=2/RE=1431673527/RO=10/RU=http%3a%2f%2fwww.hamhigh.co.uk%2fnews%2fdoctor_who_christopher_eccleston_children_baby_animals_parliament_hill_school_1_4037629/RK=0/RS=fXUevGXenxWVI8ZfAF3W3mGhFis-

(I looked up the place where I’d gotten the link in question and it went here, so same place: http://www.hamhigh.co.uk/news/doctor_who_christopher_eccleston_children_baby_animals_parliament_hill_school_1_4037629 )

Also, after I closed several tabs in Chrome, I think the warnings stopped showing up.

But–it also alerted me to Windows wanting to restart to install updates. At the time, it was late at night, and I put the computer in sleep as I usually do. I know from experience that if not the next time I wake it, then the time after that it will demand that I install the update. Some googling turned up that Tuesday WAS Windows day to put out updates.

Oh, and while it has been a bit slow (which I’ve chalked up to my having lots of internet tabs open and it not having lots of memory), the only odd thing I recall happening otherwise is Chrome defaulting to a different bookmark folder than I thought it had been when I bookmarked something. But both were existing folders, and either (because I have a poor sense of time sometimes) it may have happened after I created the new folder and I just forgot about it, or it may have followed Chrome’s making another fuss about something to do with an issue involving my logging into the browser when I opened a new window.

I realize I haven’t provided as much information as you probably really need–I’m on a library computer (and have only a little time remaining in the session). But because I am kind of a nervous wreck, I would like assurance if possible that this shouldn’t meant there’s a problem with the update?

Also advice on how to check if there is a problem that has slipped past avast? (it’s happened a couple times in the past on my Vista computer)

Win32:Evo-gen [susp] = suspicious

if you want a check, follow instructions here https://forum.avast.com/index.php?topic=53253.0
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