When all you guys go to delete your boot history theres another file in the same folder. The name is "explore_view.txt". That file tells your boot history file what to record the boot history from such as, Games, Music, etc. If you open up the .txt file and and remove everything exept the photo lines of code it will no longer record your boot history exept the photos you viewed. Unless you have some hacked/homebrew photos this should make everything alot easier for all.
Step 1. Download the edited explore_view.txt . MEGAUPLOAD - The leading online storage and file delivery service
Step 2. Start your Ftp server on your PS3 and open your FTP client on your computer and connect.
Step 3. Go into /dev_hdd0/home/000000XX/etc/
Step 4. Remove the current explore_view.txt file
Step 5. Drag and drop the new one in and your good.
Now your good to go and no more worrying about boot history!