If you call a large crack in the seatpost rendering it useless "troubles" ..... then yep, I had troubles with my carbon seatpost.
Incidentally ... the "troubles" all began just like you describe with the seatpost slipping. I kept trying to tighten it down so that it would stay .... they told me that I, a small woman who had very little upper body strength in those days, tightened too much ..........