On Mon, 16 Feb 2004 13:19:12 -0800, "Tim Wescott" wrote:
Note the common thread: "get a bigger bike!"

Most good posts have a marking for maximum height, dont go above it. If neccesary get a longer post. I have a kalloy uno one one of my bikes, its very long.
Is it a mountain bike or road?
If the problem comes from a small frame, have a look at the handlebarstem. Make absolutely sutre that its not overraised above the max marking. Failure on the
seatpost is nothing compared to a failed stem (ive seen it happen)
Henning