Avast False Positive

[#1]

Some are getting a pop-up saying that they have a rootkit (C:\WINDOWS\system32\Drivers\sfloppy.sys. rootkit:hidden file) Avast know about it,there is nothing to worry about, when asked if to delete it or ignore, click 'ignore'.

[#2]

same here.
Googling it, its seems it is often false reported by other programs.
Its not even in the root, its in Windows/System

[#3]

True pierre_pierre, first time it happened, i let it do it's thing on a boot scan, 3 times it done it, i was thinking i did something wrong till i went to their site and seen alot were getting the problem,apparently it was an update that was causing it.