[cmcquistion]

If you have a dual-core CPU, then BTV will try to launch two post-processing tasks at once, whether you use "immediate", "deferred", or "deferredimmediate".

I don't use PostHaste, because I couldn't get it to work, properly, but the script that I wrote to do my post-processing has a procedure in it to make sure that only a single post-processing task runs at a time (I have a dual-core CPU, also, but I didn't want to have too much I/O.)