Happy with United from the FRA lounge... after a couple of 1st class rides to and from Austin within the last few days, then a surprise seat change on the late flight to FRA from IAD last night. Why did they change our seats, we wondered? We boarded and found out the answer - a new configuration 777 replaced the original aircraft. So I passed the 1K mark sleeping comfortably last night over the Atlantic, after a very good dinner and movie. Really glad to have been able to use the SWU's this year, and have been upgraded in domestic flights throughout the year more often than not.Thanks United!