prelink is a program that "marks" other programs and libraries with information to allow them to better utilize the shared libraries (simple version, but you get the general idea).
Yes, it will pound the crud out of your CPU while running, but it only does a "full scan" periodically. The "problem" occurs when the computer was off at the time the full-scan is supposed to be run. The anacron service makes note of cron-jobs that were not run at their appointed times due to the computer being off and will trigger them to run when the computer is back on. This is the downside of turning the computer off. Heck, I even leave my laptop on when it's at work -- plugged in, of course.
Linux User #28251 (April '93)
Professional Java Geek :cool: