We have released an update to Gravity Forms that patches a character encoding issue. It is recommended that you update your Gravity Forms install to the latest version to avoid any issues with character encoding in form submitted data.
You can upgrade to the latest version of Gravity Forms using Automatic Upgrade or by downloading the latest version of the plugin from the Downloads page.
Please Note: Automatic Upgrade will only work if you have entered your Support License Key in the Settings page of Gravity Forms in your WordPress Administration Panel.