NSURLConnection crashing under 10.5.7

Question

I have a little app that downloads stock prices and was working perfectly (for years) until my recent upgrade to 10.5.7. After the upgrade, the program would crash on this

Answer 1

This seems to be related to redirects. My app downloading about 500 megs of data directly (few hundred separate files) doesn't crash. Same app downloading smaller set of urls, all of which are redirected will randomly crash several times in exactly that point (restart resumes, and restarting over and over again will actually result in successful download).

EDIT: BTW, Colin's suggestion about reimplementing redirects doesn't seem to work for NSURLDownload :(.

EDIT2: Ok, this seems to be a race condition. Adding cerr << "redirect" << endl; in the callback "fixes" it for me with NSURLDownload. Sleeping for 1 second or locking a local static mutex have no effect however...