I'd say it's probably divxg400 messing around... (it's installed with Nimo's pack) It too displays subtitles
It shows up as a tiny blue screen in the systray
you can right-click on it to access its configuration window and disable it (you don't need it unless you have a matrox video adapter and want to use TV output display)
or you can completely unregister it by finding the file divxg400.ax, then go to start-->run
and type
Code:
regsvr32.exe -u [path_to_file]divxg400.ax
if that does not change anything or you don't have divxg400, I can't tell what loads the second sub...