Samsung Galaxy Tab is Sluggish and Hangs after JellyBean Upgrade

My Samsung Galaxy Tab2 10.1 started behaving weirdly all of a sudden.
Symptoms

• Applications are not responding
• Accessing settings options hangs or not responding for a long time.

The main events which happened before this issue are

• Online upgrade to JellyBean from ICS.
• New micro SD card is added

Ideally none of the above should cause the device 'Sluggish', But the fact is that my tab became unusable.

After a quick internet research , I was 'happy' to realize that there are many unfortunate souls out there who faced the same issue after JellyBean upgrade.

'Factory Reset' seems to be the only solution for this issue.
But before that I decided to try other options like -

1. The data in the tablet was getting back up to Google server. This could be a costly service So disabled it from the Settings -> Backup And Restore.
2. Installed AVG anti virus for tab : In the first scan it identified and disabled an unathorized service which was performing Network access.
3. Uninstalled all applications.
4. Removed SD card.

Restarted the tablet (Press and hold the power button), and it started working normally.
But the happiness was short lived, after some time I inserted the micro SD card again. And the hang issues started again!

With this I agreed that Samsung won and I lost and decided to go ahead with the 'Factory Reset'.
For doing this- select the option from Settings-> Backup and Restore-> Factory Reset-> Erase all data.

This operation takes only couple of minutes.
After this , the devices is back to normal state.

Note:

1. Backup all the data before performing the factory reset.
2. Try other options mentioned above before executing Factory reset, it may solve the problem.