Hello everyone, i need some help with this one and i have given as much info to help solve the problem. i recently did a clean install of windows7 home edition 64bit. i installed intel i7 920 2.67ghz, asus 1366 p6t m/b 1333 triple channel with HD 500gb. also utx fscenex 747-400x and md11x. internet off and uac on. i run as administrator. when fsx boots up i click default cessna 172 at KSEA 34R and all appears ok. when i select the 747 or md11 they appear ok but after about 2 minutes a box appears saying "i am out of memory and fsx will close down" i checked the performance info tool on windows7 and the cpu is rated 7.5, memory(ram)7.6, graphics 6.9, gaming graphics 3D 6.9 and HD 5.9 average base score is 5.9. these figures mean nothing to me but i included them anyway to help. sorry for the scroll . any answers would be appreciated. richard welsh . PS i omitted to add 6gb ddr3 memory. richard welsh

Richard,I've had a couple of users report seeing this in Support and as strange as it may sound, reinstalling the SP2 update or Acceleration Pack seems to clear it up. For some reason the Memory limit and multi core update that were a part of SP2 update has to be reinstalled on some computers for it to actually work as it should. Let me know if this helps clear it up for you.

hi Paul, you are a friend indeed the sp2 was the answer to the problem. many thanks. richard welsh.