When I press 'j' in a text file with long lines, it won't proceed to the next line until I've pressed j 'n' times.
So if I have a file:
a b c d e (long line that displays as 5 lines on screen)
And I only see a-d, when I press j, I have to press j five times for line e to appear.
I generally do clean installs when upgrading my laptop; I've just got a new MBP with Lion, so it's possible I've left something out of my previous settings, although this isn't a behaviour I've observed from less before. I can't see anything in .lessrc or LESS-style environmental variables. A quick Google didn't show anything either.
Ok - this is a terminal issue - my old config must've set my terminals to vt100, my new one leaves Lion's default of xterm-256color alone. If I "export TERM=vt100" everything works as it should - so what is broken in xterm-256color's terminfo? (/usr/share/terminfo/78/xterm-256color)