Images Show 0x0 File Size After Upload

Using both the browser and Flash uploaders, I had a problem from about 2.9+ with .jpg uploads showing a 0x0 file size, exactly as described here:

http://core.trac.wordpress.org/ticket/12532

Finally, I contacted hosting.com, and the good people there made the following changes to my php.ini, which completely resolved this issue for me. I do not know if it is a single one of these or all in combination that resolved the issue:

safe_mode = Off
memory = 16M
upload_tmp_directory = /vservers/mydir/tmp

I am posting this because there are several unresolved threads out there that describe a similar issue. Hope this helps someone.

For me, I had completely reinstalled WP 3.0 with a new database and was still having the issue, so I had ruled out bugs as completely as possible.