I am currently using the WP 3.3.1 along with the WP Photo Album Plus 4.3.5 plugin and Antispam Bee 2.3.
When I have a gallery of images setup in WP Photo Album Plus with more than 30 photos (+- a few) the slideshow or large versions of the photos won't display. When I de-activate the Antispam plugin these galleries display fine.
I contacted the creator of the WP Photo Album Plus plugin and he sees nothing wrong with my current configuration. I just wanted to report this information to you in-case you hear about it from others or have any suggestions on how to go about fixing this issue.
If you need anything from me please let me know.