Is gtalk_async quickly draining your Android's battery? Factory reset works for me.
Back up your data first. Contacts, images, music, and apps may be backed up by HiSuite or some other application.
After reset, for me, PlayStore wouldn't work right, because my Wi-Fi was not connected fully.
I finally got all of my apps set up, and my battery shows full again! Also, the phone works faster.
Time will tell if gtalk_async shows itself again (I don't know how it happened in the first place).