Yes well, Malaysia Airlines, Singapore Airlines, Saudi Arabian, Emirates and maybe a few others (kenya Airways + air austral Sometimes)bring full B777's (both 200 and 300s) in daily, and the air is very thin in Jo'burg being elevated to around 5000feet, causing less air-lift under wings, meaning harder landings?
Yes, Cape Town has been having runway trouble as well, they also recieve 777's.
Emirates 777-300 arriving with a bang into JNB:
http://www.airliners.net/open.file?i...FP&photo_nr=34