Haven't willfully submitted to the CLIQ's new update yet? Well, you might want to hold off, because it looks like the new code is causing more heartache than good. A variety of reports on T-Mobile's official support forums echo the same overarching complaint, which is that messaging is a disaster zone ever since version 1.3.18 took hold -- long freezes when using the messaging app or widget, messages not getting sent or being sent multiple times -- basically all the things you really don't want to happen on a device that touts its social connectedness. For what it's worth, we've personally seen this happen on a CLIQ since the update, so we know there's something going on here; T-Mobile says that the complaints have been "forwarded... to the appropriate people," so hopefully we'll see some resolution soon. In the meantime, users experiencing issues are advised to not perform a master reset -- important advice, considering that's one of the first fixes many users might entertain.
Update: Follow the break for the full details from Motorola -- it looks like a date issue where the year gets stuck on 1969 is priority one for them, but they've got a workaround set up until a new OTA update's ready. Messaging issues may be alleviated by clearing out your backlogs -- if you've got too many old messages, it sounds like this could be bogging things down.