Well, note that poser does use common library elements that are a part of quicktime for various aspetcs of interface and animation -- always has. But they are installed by poser itself an installation time. These same elements are referred to by the TSR agent, creating a dual reference. These common library elements are present still in the current QT version (and the similar itunes component) for backwards compatibility. Note that I have both installed. I use QT in my media authoring, so it's somewhat important. I do not have the tsr enabled, and my library load time is roughly about a half second (and each of my runtimes is still quite large). I can speak only to the experience I've had across a range of systems, and will note that every system has it's own kinks and quirks once it's been used. I should also note that I have the two programs installed to different physical drives (Poser has it's own entire drive), and that QT only has association with MOV files.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)