If the CIA tried to sell commercial computers, would you buy one? Of course you wouldn’t. One doesn’t need to be a conspiracy theorist to think that just wouldn’t be prudent.
Now here is a slightly different question. Would you buy networking equipment from the Chinese military (the PLA)? Again, of course you wouldn’t. How about a company closely tied to and perhaps even controlled by the Chinese military? This is exactly the kind of uncertainty that is torpedoing a deal to sell 3Com to several investors, including China’s Huawei Technologies. You can read more about it here and here.
Now I am not suggesting that Huawei Technologies or any other Chinese company has or intends to embed back doors into its computers or computer components. But the relationship between the Chinese military and some of the major Chinese manufacturers is a very serious issue.