Comment 96 for bug 349469

I just hit this bug while installing 12.04 from a flashdrive

basically it was a simple case of user error, however it is also a program error too, because it is not effective for a program to crash as a means to tell the user that they did something wrong.

if a program has a choice between crashing or checking to see if a file is locked, then it should certainly do the check... this allows the program to exit gracefully and clean-up and most especially it allows for proper informational notices. The alternative is that the user is left perplexed, the bug database gets flooded, and users are forced to reboot because of a simple error....

Steps to Repro (this is only one of many possible scenarios)

1) Start the Installer (ubiquity)

2) While on the "Welcome" choose language screen, open a terminal

3) sudo apt-get install lm-sensors (or any other not currently installed program)

result: crash

expected: error message telling me the resource is locked

note: after quiting the installer... find that system is in unusable state and must reboot

someone needs to give that program a dose of Ubuntu Community Spirit :-)