mm1220 - 6:06 pm on Nov 30, 2006 (gmt 0)

normally program code that is swapped out to disk

When that code is swapped out it gets scattered all over the hard disk (situation is aggravated if the drive isn't defragmented often). So while it's not random in the database sense, the physical drive head has to randomly move all over the disk to find the data it's looking for.