Hi,
I want to clarify something, the file size growth issue (or as gpm would say, file bloatification) is not the result of QuarkXPress appending data to a file in the manner described above. This makes it sound as if the issue is "by design", as opposed to a defect in the software. There was an issue, under certain circumstances, with some versions of QuarkXPress 7.x, that resulted in chunks of space in the file were left "unclaimed". Asa a result, the application is unable to reclaim such space when performing subsequent save operations. That issue was fixed, and is not present in QuarkXPress 7.31.
The problem is that files that were left with space that cannot be reclaimed, will remain with such unclaimed space in them. The suggestions made above are valid ways to restore the file to an appropriate state.
Regards,
Alberto Varela
Lead Software Architect
Quark, Inc.