Now, few days ago, I can tell you that there is no problem with battery indicator at all, actually it seems that it can stay charged for longer time than before. But its based only on my personal feelings after thinks like reflashing firmware again and restoring factory default settings, so I may be wrong.
To the previously discussed bug with charger and connected message when battery is full, I have tried it once and no bug appeared. So it seems to be fixed right now.
Btw after flashing my firmware, some java applications broke and I had to delete them. They could not be started. It is expectable when they are in phone memory, but I tried it once more and they broke again even in SSD card memory. I dont really mind it, I'm just curious how can it happen. I thought I understand Java ME, I actually wrote my bachelor thesis about it

Can you explain it?