Just send it, it is just a warning to tell you if the recipient's phone cannot read chinese then he/she can't read your message. Most of the time they can.

USB charging is slower than the wall charger.
What are you doing on the phone while charging?
Try taking out your juice defender maybe there are some settings that caused this problem.

I read a lot of complains about lag and SOD in 2.2 final.
For now I'm sticking to beta6 for a while since it has the best battery life + stable for me.

Tell us the movie name of your signature and we should tell you the performance of the 2000mah battery.

yeah, for cards that always get corrupted files are mostly fake, or faulty.

Should be app/connection problem.
Rooting and changing rom to make an app that doesn't require root access to work properly doesn't make sense.

You mean when using the stock video player?
Have you try other video player apps like Moboplayer?

Overclock / Underclock I think no need, only undervolt need some kernel that allows it.

I suggest you talk nicely with them first and see what they say.
However since your battery already out of warranty period, by rules they are not obligated to give you a new one for free. If they do, then treat it as a Christmas gift, if not, that's life.

Unless they give you a really bad attitude and blame you for everything then maybe you can consider making a fuss about it

In your Settings>Date and Time, untick the Automatic and set your time manually.

You need to download Swype beta version from swype website.
The one that comes with other country's firmware doesn't include chinese input.