iepatchuninstall.bak and " " " .log

I cannot find any info online about these two:

iepatchuninstall.log and
iepatchuninstall.bak found in on my pc @
c:\windows

both created yesterday, which means they're newly added and I don't know where they came from, plus not finding them, is this trojanware (whatever you call it?) even though hijackthis isn't picking anything up which I'm not totally confident hijackthis is the best thing out there really -- adware isn't picking up some things I found out were spyware lately too (all updated) and pcbugdoctor I am not crazy about either which it's been advertised to fix so many problems, but fixed hardly any of my problems which caused me to download it in the first place.
Without complaining to everyone,
I'll just stick to my original questions on the bak and log files above. LOL

Thanks for help if anyone is familiar with either/or -- should be connected.
I worry about anything in my windows or system directories.

 

read the log, is it technical info about updating IE? have you updated IE lately?