I tried Dragonair -- same problem there -- though it looked like it was actually searching -- longer time delay before the error message.

I figure to keep watching here to see when (if) Cathay gets some programming talent to fix the issue. Isn't urgent -- I was able to set up seats (which Check my trip confirms) by phone.

I just find it something of an indictment of computer skills at a nominally top notch airline.

A non-related question -- regarding check my trip -- I can't get it to recognize domestic flights in the US with confirmation codes -- is that something others have encountered? It is a free site, and the domestic flights have working websites, so not a big deal, but it is just something to wonder about. Perhaps US based airlines block access?