Ron, when you post a thumbnail with the vB image insertion routine the original size is retained when you click on it and as long as it's not god awful cellphone huge like 15 megabytes (no more than 2-300 KILOBYTES for pictures will suffice normally, just reduce the file size with your computer, like with Paint or Photoshop).
Since you can place them in the text body instead of attaching them you can still get the benefits, it just won't be all whizbang purty and all. Oh well, this is the 2015 version of software created in the mid nineties.
PSBACKUP BACKUP BACKUP! And always keep it on a CD as well as your computer.
Try retrieving and saving then removing your images bit by bit and seeing if more just 'show up'. Then get a new host, I think yours has other problems (like being known for hosting all kinds of PORN).