Internet research firm comScore says the average U.S. computer had an average of 3GB worth of MP3 files, and over 300MB worth of WMV (Windows Media Video) files. The study looked at computer hardware and software configurations in April. Here are a few other interesting findings:

• Hard drive capacity is on the rise. Over the first four months of the year, the number of computers with hard drives under 30GB shrunk, while the percentage of computers with 100GB+ hard drives rose.
• Users with the largest MP3 collections are more likely to spend time online gambling, gaming, shopping, chatting, and doing just about any other kind of online leisure activity that was tracked
• Users with large collections of Microsoft Word Documents were more likely to spend time online in business related pursuits like travel, finance, and shipping.

So take a look at what's on your hard drive. If you've got too many Office documents and not enough MP3s, odds are you're spending too much time working. On the other hand, judging by the sheer number of MP3s taking up space on the average computer, it doesn't look like that's really much of a problem for most Americans.
[via Information Week]