FCP Render Issue, might be QT 7.4.1 related

We're experiencing a sudden Memory Error issue with Final Cut Pro that has led to bad renders. The issue has been happening on my Mac Pro for about three weeks now and it started happening on our PowerMac G5 Quad 2.5 yesterday. I also checked with a client in New York who is experiencing the same issue.

When working on a project and attempting a render, we sometimes get the following error.

Most often this error pops up if the system has been running a while, four hours or more, or I'm rendering out a full episode of 22 minutes or longer. Generally the error appears about 75% in to the render.

What then happens is the render actually keeps going, but the renders are all screwed up. Partial lower thirds, graphics in the middle of dissolves, graphics from somewhere else in the project.

As far as we can tell this issue started after installing QT 7.4.1 on all the systems. We have plenty of RAM on all the systems and the projects we're currently editing were all edited last year on the same systems, we're just revising them now. Checking to see if anyone else is experiencing these issues. Here are three examples.

The Lower Third should have a transpararent black bar and her name above the title. Also, it added a freeze of the person from earlier in the soundbite.

The Lower third should have her name above the locator and a transparent black bar behind it.

The words "West Virginia" appear in the middle of this transition at the end of a 27 mintue episode. West Virginia is part of a Photoshop graphic that appears approx. 2 minutes into the episode, FCP added it in the middle of the transition.