[Fab_Dan]

I have the exact same problem and have found several ways to 'deal' with the problem. Here is what I have come up with so far...

The character lag may be because you have your messaging app open at the same time that you are trying to use another application. I know this doesn't sound like should be true, but it is. The most concrete evidence I have for this is having the messaging open at the same time that I try to use Azurea (a BOMB twitter client). I use the task manager to stop the messaging and then lag goes away.

For the buttons causing the the failures... your a little effed with that. I find that the problem is exacerbated by soft resets. It seems like once I soft reset it wants to do it ALL the time. However, I often encounter the problem even by typing an "A" or typing something in a particular order. I thought maybe something relating to a key swop was the issue, but when I check there doesn't seem to be any 'visible' signs of remapping. So, I try to dull the malfunction by messaging (choose a good friend) a series of 1-2 word messages, avoiding the error, to someone. It seems like after I do this the error goes away until the next time I soft reset.

I hope that helps a little bit... but here are some other things that I am trying to track down. I believe that I encountered the error after I installed a different shell on my phone. It is my belief (I am not that techie, but work with me here) that the shell has saved something crazy somewhere deep in the phone's memory, which is why hard resetting has not worked. I had my phone for 6 months before it started happening. So, if anyone has any idea of what something like that could be hidden that might be the next step.