Found fuspredownloader.app in Login Elements

Hi all. I found the app fuspredownloader in Preference Pane -> Account -> Login Elements (I hope the english names are correct, my system is in Italian). The Hide checkbox is selected. The app is located in an hidden folder with path Library/Application Support/.FUS/ where i found these files:

• fuspredownloader.app
• PreDownloadNotify.app
• temp.zip
• URLInfo.xml

In the xml file, I found an existing Apple URL:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>STAGING_SERVER_FLAG</key>
        <string>0</string>
        <key>TEST_FLAG</key>
        <string>0</string>
</dict>
</plist>

So I'm confused: where does this application come from? Have i to be worried? Can i delete it without problems or is part of an Apple service?

I'm using Mac OS X 10.6.8.

Thanks for your attention.

Federico