If you want to add basic location fields in user profile both for registration and profile like city, country, address, postcode you don't have to install any plug-ins .. Joomla 2.5 gives the option to do that by default :)
Here is how it goes:
Step 1: Go to 'Extensions' -> 'Plug in Manager'
Step 2: Search 'Profile'
Step 3: Enable the plug in called 'User - Profile', its disabled by default.
Step 4: Click on plugin and from right menu select the fields you want.
Step 5: Save & Close and you are done :)
Here is how it goes:
Step 1: Go to 'Extensions' -> 'Plug in Manager'
Step 2: Search 'Profile'
Step 3: Enable the plug in called 'User - Profile', its disabled by default.
Step 4: Click on plugin and from right menu select the fields you want.
Step 5: Save & Close and you are done :)