I Ran the quick scan again and sat and watched it (yawn) and their were distinctly noticable pauses in folders.
c:\Windows\INF
c:\Windows\system32\drivers
c:\Windows\system32\dllcache
c:\Windows\system32 big pause, big folder.
c:\Windows\servicepackfiles\i386
Slow progress through, c:\Program Files\ 675MB, 4308 files 410 folders.
I have some of my programs not on c: but on d:\Program Files\ 582MB 5989 files, 456 folders and there doesn't seem to be anywhere near the same delay as c:\Program Files\.
I can watch it pause slightly on virtually every folder, many enough to quickly write it down, in the past these folders/files would wizz through without pausing and it was hard to record what would be being scanned.
One that surprised me was d:\program files\winfaxpro there was quite a pause and that is only 47.6MB 959 files in 6 folders.
Could there be any impact on the scan duration because of the scan progress ?
Quick Scan, no archives - confirm no aswar scan took place, no error coinciding with the scan start time.
Total Files/Folders scanned 39,657/3871
Scan duration 16min 03sec
Total scanned file size 7.3GB
My exclusions:
G:\drive-images\* my back-up hard disk images 2GB file sizes, etc.
D:\avast-excludes\* samples and tools that would otherwise be detected by avast.
?:\pagefile.sys I have my page file split over two HDDs, 128MB fixed on c: and 896MB min to 1536MB max on f:
So there you have it, personally like Tech I'm not to concerned about on-demand speed, I'm not normally sat waiting, but I would like to get to the bottom of for others reporting this as a problem to them. Previously program updates resulted in a slight speed increase or neutral/no impact at all. Mine are 40% slower than previously and that is on the Quick scan which has no additional rootkit scan (even though mine would fail {fat32})