Strange st* files

[miaig]

Hello,
I've noticed some strange files on my machine (slackware 12, ext3 file system) and I was wondering if anybody knows how and why are they created. Their names start with st followed by 6 random characters (stZ5T2gV, stls2MsJ, stoSsTlI, etc.). Their size is 0, owned by root.root and their permissions are -rw-------. Most of them are in /usr/local/lib/ but they are also in: /usr/lib/httpd/modules/, /usr/lib/, /usr/local/bin/, /usr/local/lib/GConf/2/, /usr/local/lib/orbit-2.0/, /usr/local/lib/gstreamer-0.10/ They were not created all at once, their dates are from 2008 till a few days ago.
Is there a way to monitor my file system to see what process is creating them? I tried lsof but none of them are open.
Thanks for the help.

EDIT: I found out that the files are created when I'm running checkinstall. When I'm compiling a package I usually run configure, make, and checkinstall to create a Slackware package. Whenever I run checkinstall it creates these files in the directories where the files to be installed are supposed to go and for some reason it doesn't remove them anymore.

[Rubberman]

You might try using the inotify tools to find out this information.