Hi Adobe.
I'm experiencing some problems with the rendering of some videos on AE CS4. I haven't had this problem before.
When i first installed After Effects a few months ago, i tried to render videos and AE rendered them beautifully, without a single issue. After a while(some months) it started crashing in certain points of the videos, and after a while it couldn't render more than 300 frames(after 300 or less frames it crashed).
I tried all the solutions available in this site and other sites, but none of them worked. I suspected that my computer had became slower over time and assumed that that was the problem, so I decided to reformat(myself) it as soon as possible.
I thought i fixed the problem by formatting my PC. When i tried to render the same video , it couldn't go beyond 200 frames 
I'm very confused right now, how is it possible that before, AE could render the same video without crashing even once , and now (even after formatting) it can't go beyond 200 frames.
Detail: when AE renders the video, it begins very fast and just crashes at a random frame ( not at the same frame every time)
THIS IS BIZARRE, I TELL YOU!!!
PLEASE HELP ME, THE WORK OF MY LIFE DEPENDS ON IT!!!
My PC specs:
Win7 ultimate SP1
Processor: Pentium(R) Dual-Core E700 2
3.00 GHZ 2.99GHZ
INSTALLED Memory(Ram): 2.00 Gb (1,75 usable)
System type: 32-bit operating system