No its not infected.
Although theoreticly infectable, and well within means of making a virus or spyware ect for the LLL, its runs Linux (hard to infect if you didn't know already!) on the MIPS archetecture which is so obscure, theres not point in making a virus for it.
Who'd make a virus to infect digital boxes or cheap MP3 players?
Although you probably know this already if your doing stuff in MC!
