Phone freezes when.....

Whenever i send or receive a pic from a certain phone number my phone slows to a crawl...It is just this one phone number? any clues?

This used to happen with my incite and iphone from same person and now with my expo and another at&t device i think its a samsung...another note it also happens when the same photo is emailed....kind of annoying the only way to fix is to delete all texts/emails from the phone or to download the email using my computer...if i use the comp to get the file it works fine its only like 92kb so its not huge or something...anyone have any ideas i dont think its the same thing that was happenin in the other thread because they said it was just mms whereas mine is mms and email thanks for the response though