So you're good at changing topic?
I hate when this happens! Especially when I started the conversation and then all of a sudden the person I'm talking to starts talking about a different topic

So I usually say "What's the connection between my topic and yours?" and usually the person says "I thought your conversation about the previous topic was dead..." or stuff like that. If the conversation moves on and you start talking about different topics because of it it's ok, but it's really bad when you're talking about something and the other person is only thinking about starting a new topic and is waiting for the right moment to do it. You can see it by looking at others face when they're planning to talk about anything different, because they look distracted, annoyed, sometimes nervous, and they reply only few times in your conversation saying "Hmmm" or "Yes" or "I don't know" and they usually start staring at things around them etc etc...
Wow! From my experienced post I'd say I must be boring most of the times!