This MAY be fixed in 2.0 RC3 (released last week), but Craig found a bug and I just duplicated it here. If you compose a private message with apostrophes, they will get preceded by a backslash when you go to preview them. If you preview the message a second time, a second backslash is inserted. So... First draft: "Let's see if we have a problem." 2nd draft: "Let\'s see if we have a problem." 3rd draft: "Let\\'s see if we have a problem." 4th draft: "Let\\\'s see if we have a problem." ...and so on. This seems to affect ONLY the private messaging editor. I tried it using two different themes and got the same bug, so it is not related to the theme in use. Normal post editing and previewing works OK. I can't find mention of this on SMF's site. I tried this on another site I installed 2.0 RC2 on, and did NOT get that error. I'm thinking it might be one of the plugins here.