It might be the case as @Filark pointed out. It is working now (after about 20 hours).
It was working just before the upgrade, and started giving various errors (comm problem or site is down) the very first time I accessed it after the upgrade, and it remained like this till the last time I attempted before sleeping. A perfect situation to blame 'upgrade' to this fault.

Just to add one thing about my last post. "Upgrade the Dingo even if you have done already"
Anyway I am happy with it, few more goods and bad
Good:
- Landscape reading, excellent idea for reading magazines and scanned PDFs (many of Urdu language ebooks are scanned type)
- Att into Browser from eReader side is a good idea (but could not find how it works)
- Battery seem to perform better (not sure why, may be hibernating has better power saving)

Bad:
- More frequent crashes, even fring was crashing. Before the upgrade It was working even with video calls.
- Have not been successful in moving a single app to SD, either using appstoSD (free) or native 'app manager'
- Games, even installed from eDGe store are causing the crash. I have deleted almost all.