Sorry for resurrecting old threads, but it's probably best to continue with one than restart the discussion from scratch.
I've been having a lot of delayed messaging between my phone (S60) and my wife's phone (S40). At first (for a few weeks) it worked fine, but now messages are just not getting through. Sometimes we have to power off/on before they arrive.
I've also noticed delays when "whatsapping" (is that a valid verb?) other users.
Anyone else seeing problems?