No.
Your jerking could be caused by all sorts of things -- oh er misses.
Gary is assuming that you are talking about movies and not television shows, but "jerking" during pans is to do with changing formats as Gary says.
I'm trying to be very simple here, not totally laboriously correct...
Movies are 24 frames per second (FPS)
NTSC video (e.g. Simpsons, Friends, Buffy, etc) is 30fps displayed in 60 fields per second (due to interlacing)
PAL video (e.g. The Office, Phoenix Nights, etc) is 25fps displayed in 50 fields per second (due to interlacing)
Problems like jerking highlight the difficulties in changing from one format to another.
For example, putting movies on to an NTSC (region 1) DVD, 24fps has to go into 60 fields per second; this is done by a process called 3:2 pull down it can make pans very jerky.
Putting movies on to a PAL (region 2) DVD, 24fps has to go into 50 fields per second; this is done by speeding up film 4% it makes the movie play faster.
Putting NTSC video onto PAL DVD or for broadcast in UK, 30fps has to go into 50 fields per second; and for PAL video onto NTSC DVD or for US broadcast, 25fps has to go into 60 fields per second.
It all gets a bit complicated.
Even more so, as Gary suggests, when you may be watching an NTSC DVD output to PAL on your screen. Then 24fps goes into 60 fields which is then converted by DVD player into 50 fields; which could result in all sorts of difficulties.
If this jerking is with NTSC movies (region 1); check that your DVD player is outputting the right signal, and that your screen is multi-format and can accept an NTSC signal anyway.
StooMonster