OK, I've updated to 7.501 and disabled around 2000 of the IDS rules. The CPU spikes seem to not be there for now, however
Apple - Movie Trailers still doesn't work anymore.
I noticed however, that if I turn IDS completely off,
Apple - Movie Trailers works again... it seems that the new IDS introduced a rule that leads to false positives when using Quicktime.
When changing the Quicktime IDS rules from DROP to Notify (or turning it off entirely), everything works again...
@KSeemann: Yes, unfortunately, I can't do what you did as I don't have proxying on at all, but see above
Cheers
Remo