Can somebody explain this? du & ls showing different sizes

[Vijay Gill]

Latest kernel (kernel-2.6.27.12-170.2.5.fc10.i686): files under
/var/log, /var/run and even MySQL database files get 512M allocated to
them while they are open (which they do while system is running) even
though their size is very small, leading to reporting of very less
free space(a few megabytes) even though 3.1G should be reported.

Previous Kernel (2.6.27.9-159.fc10.i686): There is no such behaviour
and system reports correct free space.

I will file bug in bugzilla this week-end after collecting more
information instead of just some observations.

I read the mail of that guy and you are right, he was talking of FC7.

Vijay