by macca22au » Wed Jul 11, 2007 8:08 pm 
			
			yes: either run a repair with your FSX to see if it is a corrupted file
or.... your CPU is overloaded.  Turn off everything you don't need, including Antivirus to give yourself more CPU cycles - and get rid of any of those downloads that offer free cleaning, free anything, as they come with heavy advertising demands.
Get yourself a decent defrag - O & O, Ultimate Defrag, Perfect Disk, you name it and most give a free trial.  Do a File/Name defrag.