Yeah - I went through to the attachments area and started deleting. I basically had to delete a ton of pictures - even ones I didn't want to - in order to open up any space. It wouldn't let me delete all the images posted, which is why I got stuck deleting ones I'd have rather kept. I deleted all that it made available for me to delete, and it still only opened up a fraction of space.
And now I'm running into your issue of it not letting me post the same picture in two different threads. Grrrrrrr.
Pictures are one of the best benefits of tpf!! Really rather aggravating to have these limits and restrictions kind of 'pop up' out of the blue.