[Q] TF300TG crashes sometimes when dock is reattached, normal?

[greenoid]

My TF300TG is on stock rom Jelly Bean from LG after OTA update (4.1.1, JRO03C.WW_epad-10.4.3.9-20121106) and sometimes it crashes while reattaching it to the dock. The screen gets black all of a sudden and I have to press the power button ~10 sec to reset it. Afterwards I can boot again.

Is this 'normal' behaviour or should I redeem it? I would like to know before I unlock my bootloader and loose asus support.