Pictures and Shit ?

Just wondering if anyone else has noted a marked difference from what a profile lists as number of pics and albums, and what you can actually view ?

Are people removing photos all over the place ?
Is it a restriction/privacy thing ?
Am I not clicking the correct thing ?

When I go to my albums I see every picture I've ever posted, but I do not have an ALT ACCT to actually test theories and such.
Besides, asking will prove more entertaining, and a quicker path to the answer...

I just know that I've seen pics in albums that are no longer there or viewable.