I am getting error message Service Temporarily Unavailable after I logout or return admin link click from magento extention manager.
From admin side I login to magento extension manager to add new extension using zip file.
When I want to go back to admin side or front end I am getting error.
I am using magento 1.8.
Thanks & Regards,
Go to magento root folder and delete 'maintenance.log' file.
Thanks it was maintenance.flag file in root folder.
-Thanks & Regards,