When replacing metacity with compiz --replace, windows creep upwards and to the left by the height/width of metacity decorations. If the top-left corner of a metacity window (with Metacity decorations) is 0,0 switching to compiz moves the window (with Compiz decorations) is -10,-50 or something. When Metacity exits, it removes decorations and repositions the top-left corner of the contents. When Compiz starts up, compiz doesn't reposition the contents and instead adds decorations around the contents. In comparision, when Metacity starts up, it repositions the window contents to the bottom-right by the heigh/width of the decorations. Overall metacity<-->metacity doesn't cause window creep, compiz<-->compiz doesn't cause window creep, but metacity<-->compiz causes window creep.
This bug is solved by adding the place plugin to your list of active plugins. See http://mricon.livejournal.com/368049.html .
Fedora Core 5 and Fedora Core 6 are, as we're sure you've noticed, no longer test releases. We're cleaning up the bug database and making sure important bug reports filed against these test releases don't get lost. It would be helpful if you could test this issue with a released version of Fedora or with the latest development / test release. Thanks for your help and for your patience. [This is a bulk message for all open FC5/FC6 test release bugs. I'm adding myself to the CC list for each bug, so I'll see any comments you make after this and do my best to make sure every issue gets proper attention.]
Even after almost three months there has been no activity on these bugs, so we consider them obsolete and they are being closed as INSUFFICIENT_DATA. Please, if you are able to reproduce this bug on currently supported (FC6 and F7) non-test distribution, or if there is any other reason why this bug should be kept alive, please, reopen, change the product to something more recent and add an additional information to the comment of such bug. Thank you very much.