I'm on Orange, UK - I can't find any of the related apps in the applications list and the Voodoo app says it isn't present. I'm yet to check LogCat myself.

However, I've not actually seen anyone directly say that it's US only but I haven't seen any Europeans claiming they have it either. I'm fairly certain it's only used on American carriers at the moment.

I bought my Samsung Galaxy S II in Finland. It does not have CarrierIQ.

HTC Desire S on O2 in the Republic of Ireland, clean!

T-Mobile Samsung Galaxy S II is all clean.

It's telling me no on HTC / Orange / UK.

Galaxy S, Telekom / Germany is clean!