In my continuing battle with this goddammed Microsoft-sabotaged PC, I called up Task Manager at one point early in the day and noticed something very strange.
RedSwoosh.exe was listed. But I'd seen that before.
This time, however, it was -- when Task Manager was sorted to CPU usage -- irregularly popping to the top at the list and eating 97-98% of CPU!
I did some research. Red Swoosh as a sole company no longer exists. It was purchased by Akamai and there is no way to get information about the program from them (at least that I could discover).
I remember a long time ago having Red Swoosh recommended somewhere for some sort of P2P app.
And then today I also discovered that Red Swoosh is used by the FoxTorrent plug-in. I have that plug-in, but never used it, and it's been turned off.
So, I uninstalled the FoxTorrent plug-in and then I went to Control Panel and uninstalled RedSwoosh.exe.
I haven't done comprehensive testing, but I can say for today, the PC has seemed peppier.
If any of you have been experiencing intermittent sluggishness on your PC, look for RedSwoosh.exe and uninstall it.