Hi,
Same problem here. Avast! scans .txt files too - although I don’t have to wait for a few seconds before I can access them.
I checked all the settings, everything seems ok: “scan all files” is not ticked and .txt files are mentioned in the exclusions (however “execution” in not ticked).
I have ticked the option for PUP and the Euristic scan level is “High”.
I opened the File System Shield page and watched the “Last file scanned” field, .txt file are reported as “filename.txt.lnk” or, depending on your windows settings, “filename.lnk”.
Thanks and sorry for my English,
T.
System Info:
Win Pro SP3
Avast Free AV 6.0.1125 ***Behaviour Shield removed
Online Armor Free 5.0.0.1097