The question I posted on the Avira forum was:
I am running a system under Windows 2000 SP4 - for historical reasons.
Recently, when shutting down, I have had a message displayed saying that a running program has not stopped and asking if I want it shut down.
The program is named SW.EXE.
It doesn't appear in Task Manager (with processes for ALL users shown).
I can't find any such program anywhere on my system
I can't find any mention of it in the registry.
I have Googled details which only seem usefully to reference "Spyware.SilentSpy". Following the associated instructions, I am pretty sure that this is not the cause of the problem.
Could it have anything to do with ShockWave? Why is it not shown on Task Manager?
Subsequent to this, I have found the key
SW\{B7EAFDC0-A680-11D0-96d8-00AA0051E51D}\{9B365890-165F-11D0-A195-0020AFD156E4} under HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\kmixer\Enum
Googling kmixer, I am advised that it relates to Windows legacy audio components and as a result, I am reluctant to delete it.
For further information, the motherboard is a MSI MS-6570 with a nForce2 chipset and on-board Realtek ALC650 6-channel audio.
I keep coming back the questions: "What is SW.EXE" & "Why can I find no trace of it anywhere?"
Any help and advice would be greatly appreciated.