I've been trying to figure this one out for some time now.
Under previous versions of AE, we could manually set an import duration on a .psd comp.
Now in CS5, this is option not even showing up!
When I try importing the .psd containing smart objects, it automatically sets these at 2 frames.
Try extending a layer duration to 30 seconds... it's impossible because it reaches the 9900 constraint at 6 seconds.
Anyone as found a solution for this in CS5?