Sometimes people post really huge photos (I think its a sideeffect of one of the apps) and it breaks your friends page, yeah? I finally fixed mine today, and here is how you can do it too:
Go here:
http://www.livejournal.com/customize/options.bml?group=customcss(Not sure if this is available for every theme or just some.)
Put in this:
img{
max-width: 650px;
height: auto;
}
Ta-da, properly sized photos.