I think that ther may have been a "lightsaber switch" in the BIG duel.

The epic fight sequence between Obi-wan Kenobi and Anakin Skywalker (which was awesome) had a discrepency that has been bothering me (at least one I thought I saw.) During the duel in the control room of Mustafar, Anakin has temporarily overpowered Obi-wan and is pushing him to the ground. The camera changes angles several times and it appears (at least to me) that Obi-wan starts the sequence with Anakin's lightsaber close to his chest, has his own lightsaber in the following camera change and in the final camera change Obi-wan has Anakin's saber again. Has anyone else noticed this, or am I just seeing things. I think this can be seen in the movie, but also different tv ads and "A Hero Falls" music vid (about 2 minutes 35 seconds in).

Any insight to ease my insanity or the reason the scene is the way it is would be excellent.