Lately when I fly in FS9 after about 10-15 minutes the Sim pauses and this happens all the way throught the duration of the Flight ok for 10-15 then pause, I have tried everything, I've run out of ideas.

 

Operating System
 MS Windows 7 Home Premium 64-bit SP1
CPU
 Intel Core i5 650  @ 3.20GHz 61 °C
 Clarkdale 32nm Technology
RAM
 4.00 GB Dual-Channel DDR3 @ 665MHz (9-9-9-24)
Motherboard
 MSI 2A9C (CPU 1) 48 °C
Graphics
 HP S2031 (1600x900@60Hz)
 Generic Non-PnP Monitor (1024x768@60Hz)
 512MB GeForce G210 (Unknown) 61 °C
Hard Drives
 625GB Western Digital WDC WD6400AAKS-65Z7B SCSI Disk Device (SATA) 34 °C
Optical Drives
 hp DVD-RAM GH60L SCSI CdRom Device
Audio
 Realtek High Definition Audio

Try unticking the box "pause on task switch" from main settings.

Is this full pause or a stutter. What Peter say plus the cause may be weather updates for which Peter's solution may help.

Its a full pause, the pause on Task Switch was ticked, now unticked, that could be it because I had reason to re-install FS9 and it never occured to me, Thanks Guys, i'll post the result after the next outing.