Jerricho,
haven't got time (tonight) to look in detail at the log, but you can safely get rid of the R0 entries.
You can also get rid of the 2 BHO ones with "no file" against them.
I'll have a look at the rest tomorrow when I get a chance.
I can't see anything that leaps out at me as being "bad", but that doean't mean there isn't anything there.
I'm pretty certain that there's nothing in the log that would stop you from loading the windowsupdate front page if you used IE.
ST