Issue: Unable to delete Album Pictures

Reporting this in case I forget again. Intended for Dai-kun but in case anyone can help, please do.

I don't use the profile album much, so it never occurs to me to delete anything until recently I get some reports on this issue.

After we upload a picture in the Album (profile's album, not Gallery), I did not use it for over an hour... it was not automatically deleted as it should be since it states there:
"Uploads not utilized within one hour will be deleted"

So because of this, some members are having issues with unable to upload more pics even after they deleted it from their album, but the pic remains in the album's upload window so it's counted in as the user's quota.
The big question is: How can one delete the album pictures effectively?

I have only increased the quota so far for the entire usergroup to help those who exceeded the limit, but I can't keep increasing it.

Thanks.