Here we go. Forgive me typos and grammar or any other errors. I was too lazy to read my post again and correct them. I just pressed "Submit"
Camera had it first test during golf tournament in Spain. Author was using it unprotected in heavy rain for three days.
The real test was Dakar rally. Usually it was like that: you see subject, step on breaks, take photo and keep driving. Many photos were taken through cars window. There was simply no time to put camera in bag so it was sometimes flying all over the car along with bottles of water.
Daily distance was usually between 500 or 800 km so sand was almost everywhere, even under lens caps. It was common to step out of car into cloud of sand to take photo of cars passing by. And those were normal conditions in which a900 usually worked. Author wasn't using any kind of camera protectors, not even bags. Camera was working normally. None of buttons or knobs had any problem. Nothing has lagged or hung.
Sensor and focusing screen were a different story. Author was changing lenses when sand or dirt was still flying in air. These elements just had to collect dirt no matter what. Because of that author has carefully protected huge blower and was using it in hotel rooms to clean camera inside. According to his notes a900 LCD display is more what is needed to see if dirt appears on images. Using external computer/display isn't required.
Only once camera displayed an error. It was about... and sorry but here I'm not sure what is english term for this, literally it is aperture lifter or pusher. After detaching lens and pushing it with finger problem was gone.
Camera was used in smoke, with ash in air and very high temperatures when lots of cossets were being baked for barbecue for over thousand people. While author was shooting in this conditions quite heavy rain appeared. Camera was covered with some mud like thing in few minutes. It was feeling like having camera glued to hands. Author kept shooting. Nothing unusal yet most of pro photographers hid in resteurant tent.
Another adventure with humidity took place in Vina del Mar near Valparaiso, Chile. Author had one day off and went to beach with surrealistic pier and huge rusted crane. While shooting from underneath of pier he was washed by wave and dropped his camera. a900 landed on sand and in water. Owner was stiffened as he thought the camera went dead. He took it away with tears in eyes and started cleaning and drying. After 30 minutes he was shooting again - water and salt didn't make it inside camera or lens.
Camera wasn't also affected by range of temperatures it was exposed to. Usually there was around 40 degrees celsius during noon and even more inside car. On the other hand temperature at >4000m above sea level was below 0 degrees celsius. LCD wasn't affected too giving great display all the time. Also batteries weren't discharging at faster rate.
Once again author mentions that he uses camera without any protections and doesn't care if it bumps around. Camera was flying from rear to front seats or fell on floor while in car. It was common thing there and those were conditions in which a900 was used... and it survived. Camera body gained just two scratches and was fully functionall after Dakar, and thats how pro camera should be made - solid, resistant. Same for lenses (and Zeiss ones had proven they're hard despite being criticised on the net for not having good sealings).
To protect his lenses author have chosen zeiss polarizers with T* coatings yet he thinks that when lens is flying around in car caps are way better protection. He was amazed how good his zeiss glass were looking and working after Dakar.
Final note says that author doesn't want to favour a900. Other photographers were using various brands in same conditions and they also made it through alive and working. He chosen a900 because he was using old Minoltas in previous editions of Dakar rally.
There is also a word on AF speed. Shots were sharp even when car was approaching with speed near 200 km/h.
but if there is anything interesting about the camera, that would be most welcome!