The Bagle.C is spreading quickly. We took it now to a F-Secure Radar Level 2 Alert, but if it keeps up the pace, it might make it to the highest (Level 1) alert. Then again, weekend is looming, and email worms don't spread too well during weekends, as people don't read their email.
The previous B variant stopped spreading three days ago on the 25th. This one will stop on 14th of March. It sends random emails with a zipped EXE attachment, looking like an Excel spreadsheet: