Perhaps related, but possibly not ... I also have similar behavior from Flash. Some sites with Flash elements on the screen give me what appear to be debug messages. I have seen this happen in all browsers, but it doesn't happen with all flash, just some.
I checked my add/remove programs and all I have installed is:
Adobe Creative Suite 4 Web Premium
Adobe Flash Player 10 AciveX
Adobe Flash Player 10 Plugin
Adobe Media Player
Any idea what might be going on with this? It is getting really annoying.