I have done a little experiment, and it's just as I suspected. The old votes, those before the "popular photo" section was restarted, have been deleted somehow from the system and only votes since the restart can count. I suspected this was the case when I looked through the "all-time popular photos" list and saw the highest vote getter, Rob's great pic of Afghanistan from a plane, had only 8 votes, and that my silly doilies just uploaded a few days ago were also in the list, with 3 votes each. Note: Now I see they have 4 and some have 5, and *I* never even voted for any of them myself...I think someone is playing a joke and thinks it's funny to keep them there, but I wish people wouldn't do that, since it is not funny and it messes up the list even more.
Now, I have a very popular photo here that has receive a lot of good comments, and it even won Photo of the Day at shutterbugs.biz, so I know people must have voted for it. This is it: http://www.pbase.com/image/23436970
I wrote to all the people who commented and asked them if they'd voted for it as well and to vote if they hadn't, since they obviously liked it. I wanted to see if it would end up with just a few new votes from the folks who gave positive comments but didn't bother to vote, or if, when the folks clicked the vote button to see if they'd voted already (no one could remember that) if any repeat votes would be counted by the system that had deleted the first vote. Here is what I learned from this experiment...
People responded in two ways...some said they'd already voted for it earlier because they got the "yes it's very nice but you've already voted for it" message, so that means there were some old votes. One person said he/she must not have voted when leaving the comment since that vote "took" and was accepted. I didn't hear from two folks yet, but there is enough data already to draw a conclusion. Since there were 7 members in all who left comments and have voted for the image now, it should be showing 8 votes (since I also voted for it when I posted it). It is only showing 3 votes, however, which is enough to get it on the list but is clearly less than the total number of votes it has received, according to those who did the voting.
So, it turns out that my suspicions were correct. All the old votes we placed for images have been lost and don't count in the restarted list. However, we can never vote for those images again! I have voted for so many wonderful images here and now I find that nearly all those votes have been deleted from the system and will never be counted! This saddens me a great deal. I can't even vote NOW for them because the system thinks I am voting a SECOND time when actually it would be the first time...since all the old votes beyond a certain date are gone!
I don't know if the old image vote database is still backed up somewhere or not, but if it is not, then the best, fairest, ONLY thing to do is to reset the "vote for this image" buttons for everyone, so we are allowed to cast our votes again for those great images we loved!