Why are people that I don't follow showing up in my Twitter timeline?

[Froststare]

I just got on Twitter and my page is filled with people that I don't follow on Twitter. The number of people (18) I'm following hasn't changed and none of them are different from what I had before. They aren't marked as retweets from people I follow either. Another thing is that one of the tweets I supposedly retweeted but it doesn't show up on my page. I never followed these people either. I haven't even heard of these people. I won't post which accounts I'm getting these tweets from unless asked, just to keep some sort of privacy.
Actually, if I go to a new page then go back to my Twitter, the tweets are completely different. Also, why did the apostrophe show up as '?
And now it's gone back to the old version of Twitter.

[Little Vacation]

It's glitching. I have the same problem... turkish tweets.

[Deena R]

ok i thought it was just me.. wheww.
weird. they needa get it together!

[Arline]

I'm having this same problem. sometimes if you refresh, the problem goes away.