Hi,
See
http://slashdot.org/"Hardware: Can You Trust Chinese Computer Equipment?"
"Suspicions about China slipping eavesdropping technology into computer exports have been around for years. But the recent spying attacks, attributed to China, on Google and other Internet companies have revived the hardware spying concerns.
An IT World blogger suggests the gear can't be trusted, noting that it wouldn't be hard to add security holes to the firmware of Chinese-made USB memory sticks, computers, hard drives, and cameras. He also implies that running automatic checks for data of interest in the compromised gear would not be difficult."
This is a bit of a techy subject but well explained, so if you take work home, have a think first before using media in your computer.
Regards, Mick D.