For what it's worth, I've had numerous Thinkpads (T23, T42, currently typing this on a T61) and suspend/resume always worked for me.
Not always right out of the box -- I had to research workarounds for video-related problems a few years ago.
Not always without problems -- on two occasions a wifi driver bug prevented the suspend from going through and my laptop spent a few hot hours in the backpack. (The Thinkpad survived that splendidly with no problems.)
Things are getting better all the time. Not monotonically -- there are regressions every now and then -- but in general more and more things work for more and more people.
Not always right out of the box -- I had to research workarounds for video-related problems a few years ago.
Not always without problems -- on two occasions a wifi driver bug prevented the suspend from going through and my laptop spent a few hot hours in the backpack. (The Thinkpad survived that splendidly with no problems.)
Things are getting better all the time. Not monotonically -- there are regressions every now and then -- but in general more and more things work for more and more people.