mandatory files install.php, update.php and upgrade-1.0-to-1.2.php?

[fishfreek]

I just updated to 1.4.2 and I see in the version checker the following files are listed as being mandintory  install.php, update.php and upgrade-1.0-to-1.2.php.  I find it strange as in most scripts your told to remove the install, and upgrade scripts when done using them.  The site seems to run fine with out those three files being there.  Do they not pose a sort of secuirty risk by having them in place?

[Joachim Müller]

no, as the existence of the install.lock file in the include folder keeps the install file from being run. Running the update.php file won't do any harm. You're free to find this out by yourself - just run those files. However, it won't hurt if you delete them as well.