Anyone else have this problem?
Hundreds of people I guess you didn't search the forum to see if your question had been already answered before posting ?
You are seeing the result of HDCP (Google it). The solution is to remove the HDMI lead that you are using to feed the TV and use the component OUT from the Slingbox to feed the TV. (You didn't tell us but I assume you are using the component output to feed the Slingbox.