C905 Issues

Hey Everyone
I have a SE C905a that I have flashed a western european fw into and I love it (AT&T Disabled sooo much, finally got wifi ) but I have noticed a few problems..

- Everytime I use the YouTube application and watch videos, my phone becomes incredibly slow after quitting. It lags like crazy until I restart the phone then everything is normal, until I use YouTube again and it becomes sloww again (I use wifi for all my connections if that makes a difference)

- I take pictures with the flash on and I will find small white dots all over the place, sometimes they are few of them, sometimes there are many, and sometimes there are none, but usually there are some small white dots. This really bothers me as they ruin my pictures

- There is a little "G" above my signal bars (the "G" is to the left, like, upper left, if that makes a difference) and it ends up disappearing after some time. I have a large "H" in a box next to the signal bars though, that always is there unless my signal is bad or something. The little "G" always disappears after a while though, and doesn't come back until I restart my phone, then it stays for a while, and then disappears again.

I would really appreciate your help for my little dilemmas, I have tried reflashing, full resetting of my phone, and nothing seems to help. Could you guys please help with my problems? Please? I would appreciate it very very very very much.

Thank You So Much

http://img717.imageshack.us/img717/7105/98815657.jpg

http://img683.imageshack.us/img683/5369/72849966.jpg

http://img808.imageshack.us/img808/5721/83788794.jpg

You cann't never see the connection type with small symbol "е" when using HSDPA (or 3G).
It is important that only with the letter "H" (HSDPA) or if you haven't HSDPA -> 3G icon:

http://img249.imageshack.us/img249/1633/61556848.jpg

What? I can't really understand you.
My phone looks like the third pic u uploaded with the G and the H
Except the G disappears after a while and there is just the H. What is happening?