***** This issue with upgrading Informatica Cloud Free Data Loader managed app on Salesforce AppExchange has been resolved. You will now be able to upgrade successfully to Winter 2013 version. Pls follow the steps here to upgrade *****
Informatica Cloud upgraded to the Winter 2013 version on Nov 10th, 2012.
For our Salesforce free Data Loader customers, please note that you will be prompted to upgrade your managed app from AppExchange. The upgrade is not working currently due to an issue that Salesforce is looking into. We are working closely with the Salesforce team and will update you as soon as a resolution is available from Salesforce.
You can login directly from the Informatica Cloud website rather than logging on from within your Salesforce org.
Please feel free to contact Informatica Cloud Customer Support (877-463-2435 or firstname.lastname@example.org) for assistance.
NOTE: This issue is not applicable to the Informatica Cloud Integration for Salesforce Managed App. You will be prompted to upgrade your app and you will be able to continue using Informatica Cloud from within your Salesforce Org as expected.
For step-by-step instructions on updating your Salesforce manged app, please see this article.
Informatica Cloud Team