This file in the prefetch folder as far as I’m aware they should only have a .pf file type other than the layout.ini file (for XP System); so I too would be a bit suspect having this AgAppLaunch.db database file in there. However, in win7 (and possibly Vista) there are lots of .db files (but not this one in my win7 system), what is your Operating system ?

Though that said a google search for the file name http://www.google.co.uk/search?q=AgAppLaunch.db shows this isn’t uncommon and may be related to superfetch, ring any bells ?

Also see Microsoft Superfetch, as I also use this setting to restrict what the Superfetch actually prefetches.

I did get lots of hits for setupapi.ev1 http://www.google.co.uk/search?q=setupapi.ev1.
Also see, http://ev1.fileextensionguide.com/.

Can you recall the full malware names of these detection?

Did this happen about 8 minutes after boot, or on a routine on-demand scan ?