Magento connect stuck on “Checking dependencies of packages” while upgrading

[sharmakapil28]

I am trying to update my `Magento 1.9.1.0` to  `1.9.2.2 (stable)` by Magento connect. but every time it stuck with the console message `Checking dependencies of packages`. I checked all file and folder permissions and they are up to mark. I also tried to set permission once again by the code http://urfusion.net/set-permission-for-magento-magento-cleaning/. but facing the same issue.

below are the solution I tried but not success.

 1. http://urfusion.net/set-permission-for-magento-magento-cleaning/
 2. https://community.magento.com/t5/Installing-Extensions/Magento-connect-stucks-at-Checking-dependenci...
 3. http://magento.stackexchange.com/questions/24120/unable-to-install-any-extension-using-magento-conne...

I have custom admin URL, will this cause the issue?

While I successfully upgraded on local.
**On Server Magento is not on `root`. It is in `/example.com`**

I am able to update other extensions like :

[jees]

I have the same issue. What is causing the long duration (hours gone and status is the same, Checking dependencies). How long the upgrade to Mage_All_Latest 1.9.2.1 -> 1.9.2.2 normally should take for a small installation without customizations.