Jan 262013
I just updated to WordPress 3.5.1 and YAPB 1.10.10 and found my multisite fix for YAPB still be required.
To make it easier for you, I provide the patched file below.
Use it at your own risk – I tested it only on a single photo blog of a multisite WP installation.
YapbImage.class.1.10.10.multisite-fix (YAPB 1.10.10 only!)