fs9 crashes because of keyboard?

[misgav 2]

In the last few weeks I have noticed an annoying phenomenon.I load fs9, and then load any of the payware planes such as ther ATR-45 or the 737NG or the PSS airbuses.I also load Radar Contact as I prefer it to the fs9 atc.After the plane is ready to go, if I hit the alt key to access the top menu, the program crashes to the desktop. The weird thing is that when I use the alt key earlier, let's say to change fuel load, usually there is no ctd.Is this problem related to memory?Eytan OrnsteinP4 2.4 GHZ1GB DDRGeForce 5700 LE 128MB80GB hard drive

[misgav 2]

Just to add to the above, the following is the ms error report that I get after the ctd;:DOCUME~1eitanLOCALS~1TempWER5799.dir00Mini081707-01.dmpC:DOCUME~1eitanLOCALS~1TempWER5799.dir00sysdata.xmlEytan