Two issues I've noticed with Safari 5.0.6.

Issue 1:
Scenario: Thread with multiple photos from one member.
Viewing them by navigating from one photo to another in the pop-up window works fine the first time I check the photos.
The next attempt will not be successful. I've noticed jumping to random subsequent photos and skipping some, although the only action from me as a user is clicking "next".
E.g. thread with 8 photos on second viewing will not go from 1/8 -> 2/8 -> 3/8 -> ... -> 7/8 -> 8/8,
but 1/8 -> 2/8 -> 5/8 -> 8/8.
What I haven't determined is whether this issues appears when I go from the thread with photos to another thread, then come back to the first thread where the photos are, but it is all in the same Safari session, no quitting it in the meantime.

Issue 2:
Scenario: One thread with multiple photos from multiple members (e.g. Dress the decade threads photos).
If I don't check all photos from one member who posted a reply, but move on to checking photos from another member (another reply in the same thread), then the remaining photos from the first stream will appear in the next one.

E.g. Member1 and stream of 4 photos (member1 photo1 = m1ph1)
m1ph1, m1ph2, m1ph3, m1ph4
and
Member2 and stream of 3 photos (member2 photo1 = m2ph1)
m2ph1, m2ph2, m2ph3

Photos viewing pattern:
m1ph1, m1ph2 > haven't checked m1ph3, m1ph4 > then I close the pop-up with member1's photos and move to > m2ph1, m2ph2 > issue: I no longer see photo m2ph3, but where I left off with previous photo stream: m2ph1, m2ph2, m1ph3, m1ph4.

I hope this makes sense. It's not too severe and one can live with it, but it might worth checking.