Why Force.com sites redirects to “Authorization Required” page when any Apex Exceptions occurs?
“Unauthorized” page makes sense in case of missing access problem.
But in case of Exceptions ideally the redirect should be the “Exception” page.

I want my site redirect to 'Generic Error Page' i.e. Exception page when any Apex Exceptions occurs. 
How can I achieve this?
Any help will be appreciated.

Tried the methods available in given link but it returns the site URL instead of salesforce URL.
http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_methods_system_url.htm
Example: I want to access salesforce base URL (https://cs13.salesforce.com) on site http://xyz.force.com/

How can I achieve this?
Any help will be appreciated.

If I use a csv file successfully for Data Import Wizard, can I use the same file for Data Loader? and if I use csv file successfully for Data Loader, can I use it for Data Import Wizard?

Triggers can be kept enabled or we can disable them in the wizard operation.  Depending on the business requirement, we might need it enabled, which is fine in the wizard.  How can I achieve the same end result coming from the triggers if I were to use the Data Loader

Triggers can be kept enabled or we can disable them in the wizard operation.  Depending on the business requirement, we might need it enabled, which is fine in the wizard.  How can I achieve the same end result coming from the triggers if I were to use the Data Loader

Why Force.com sites redirects to “Authorization Required” page when any Apex Exceptions occurs?
“Unauthorized” page makes sense in case of missing access problem.
But in case of Exceptions ideally the redirect should be the “Exception” page.

I want my site redirect to 'Generic Error Page' i.e. Exception page when any Apex Exceptions occurs. 
How can I achieve this?
Any help will be appreciated.

Tried the methods available in given link but it returns the site URL instead of salesforce URL.
http://www.salesforce.com/us/developer/docs/apexcode/Content/apex_methods_system_url.htm
Example: I want to access salesforce base URL (https://cs13.salesforce.com) on site http://xyz.force.com/

How can I achieve this?
Any help will be appreciated.

If I use a csv file successfully for Data Import Wizard, can I use the same file for Data Loader? and if I use csv file successfully for Data Loader, can I use it for Data Import Wizard?

Triggers can be kept enabled or we can disable them in the wizard operation.  Depending on the business requirement, we might need it enabled, which is fine in the wizard.  How can I achieve the same end result coming from the triggers if I were to use the Data Loader