Yes - I have the same problem. My Swift is band new and it didn't come with any shims. I've put helicopter tape on the inside of the seatstays for the time being and this is holding up nicely for now. The chain doesn't rub very hard so it must only be slightly touching. I can think of 3 solutions to this:
1) Fit shims to wide the seatstays
2) With capreo hub/cassette the 9T cog should see the chain sitting slightly lower and clear the seatstays (this is speculation)
3) (pure speculation, and assuming you also have an 8-speed cassette like me) Converting to a 9-speed cassette with it's slightly narrower chain may also be just enough to clear the seatstays.

Can anyone out there with either the 2) or 3) set-up confirm whether this solves the problem?