I recently changed saddles on my bad-weather Univega, which necessitated a small height adjustment. I had a moment of panic when it seemed that the post was stuck, although it came loose once I gave it a good twist with the top tube clamped between my knees.

Part of this may have had to do with the fact that it's of those stupidly long seatposts that extends about a foot or so further into the seat tube than necessary. But the grease on the post (it was thoroughly greased) looked a little rusty, even though the bike is always stored under cover.

I do intend to shorten the seatpost with a hacksaw when I get around to it, but I'm wondering if switching to anti-seize instead of grease might also be worthwhile in the case of seatposts.