What are the sources? Are they a specific compressed format? Any audio involved? What effects do you use? Does this occur also with otehr projects? What combinations of settings did you actually try? OpenGL off? MP off?
Its Just a TGA Sequence. About 150 Frames worth. No Effects , No Audio...Just Imported at 25 fps. It Occurs with anything I try to import.
Open GL Settings wise I tried puting them off. Then I tried putting adaptive resolution off. didn't work..I tried putting multi processing on but that just added 5 frames more to the preview. I tried the purge settings in the Secret Preference menu as well, but no use.
When Mylenium asked for your memory and multiprocessing settings, I think that he wanted more detail than what you gave.
If you post a screenshot of your Memory & Multiprocessing preferences, we can help more.
Do you have multiprocessing on ? If you try with MP off and with MP on but only with 2,3
or 4 cores, (assigning 10gb RAM to AE and 2 for other apps) do you still have he problem ?