Seems under Windows 7 Professional 64-bit, I still cannot do an in-place upgrade with Avast Internet Security. I have to either uninstall the current version and then install the newest version, or else boot into safe mode, go to the Programs section in Control Panel and tell it to Update from there. I can't do upgrades from within Avast's update tab (except for virus definitions). Any updates to the actual program cause the update to fail. The main reason is the same that's been going on for months with every other prior version: the SETUP.LOG file shows that the following:
23:27:45 nrm/fil File C:\Program Files\Alwil Software\Avast5\Setup\setup.ovr not writable. Error 0x0000002023:27:45 min/gen setif: same as previous
23:27:47 vrb/pkg FilterOutExistingFiles: 138 & 138 = 0
23:27:47 vrb/pkg FilterOutExistingFiles: 138 & 138 = 0
23:27:47 min/gen m_bOperationDidSomething 138/138/0
23:27:48 nrm/pkg Transferred: files 4, bytes 0, time 764 ms
23:27:48 nrm/pkg Retries: total 0, files 0, servers 3
23:27:48 min/gen Customer 27255093
23:27:48 vrb/int Sending stats '
http://download674.avast.com/cgi-bin/iavs4stats.cgi': 00000000 204
23:27:48 vrb/fil NeedReboot=false
23:27:48 min/gen Return code: 0x20000010 [New setup available.]
23:27:48 min/gen Stopped: 07.05.2010, 23:27:48
I cannot find why this file is locked, but it prevents the in-place upgrade within the Avast program from working. As stated, I have to uninstall the program or else, boot into safe mode and update it that way.
Getting kind of annoying.