This worked in at least 10.5.2. However, I've very rarely been able to repair images. In my case, the first corruption was caused by my laptop hanging while running a backup, and the second was caused by issues with my file server. It's too bad I can't take a snapshot of my TM image at a given state without wasting a lot of disk space :(.

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Didn't work for me in 10.5.2! My time machine image corrupted a few times running 10.5.2, usually due to the mac going to sleep during the backup, and it required fsck_hfs with the -r switch (catalog btree rebuild) to repair successfully each time. Disk Utility always failed to repair the image. I assume that's the change in 10.5.3, Disk Utility now runs fsck_hfs with -r.

My sparse bundle hasn't corrupted either since the update 10.5.3, so maybe that's fixed too!

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I discovered that if the spare image file has an apostrophe in its name you can't drop it onto Disk Utility (10.5.5). I removed that single quote from the filename and the hint worked as expected, but disk utility was still unable to repair the image.

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