3700 Creative Zen Neeon mp3 players were shipped to Japan with the Wullik.b worm, a mass-mailed worm of 2003 vintage which makes copies of itself in random locations on machines it infects.

However, the worm won’t infect connected PCs unless the user browses the file system and clicks on the infected file. Also, anyone with up to date virus protection should be safe as, once plugged in, the PC would treat the Neon like a USB drive and scan it.

Creative is reporting that the worm affects players with serial numbers between 1230528000001 and 1230533001680 and is recalling those devices. Further shipments have been halted while the problem, which Creative describes as an ‘annoyance’ to customers is resolved