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When trying to set up a printer, a window opened stating that KDE Wallet needed to start and required a password. I have put no passwords into my system. This did not happen when I logged in as root. What is KDE Wallet? What password does it want? Where do I set or change this password so that I can actually access it?
Also - Is there a way to change from user to root without logging out of the session and starting a new session?
The KWallet is a new KDE feature that can store passwords, logons, credit card details, etc., as an encrypted file so that you don't have to retype this information everytime you logon/buy something from your favourite site.
The password does not set itself: the first time you run KDE 3.2 and put a username or password (etc.) into Konqueror, Kwallet launches a wizard that explains what the program is, how it works, etc. From this Wizard you can either choose to disable the Kwallet features (ie, it wont remember these details) or enable the feature, in which case you're prompted to provide a password for the encrypted file.
As far as I know, you can't reset this password without first knowing the original password. Kwallet is designed to manage sensative data you enter in over your webbrowser, and therefore security is (understandably) tight.
In response to your last question: to run a program as root under your normal account, open a konsole or terminal window, and type "su". It will then ask you to enter your root password, and then your konsole session will be logged in as root. Any programs you call from the console will also run as root.
An easier way yet is to create a shortcut for the program you want to run on your KDE desktop. Then right click on the shortcut and choose "Properties". Click the "application" tab and check the "Run as Different User" option. Type "root" in the username field, and "OK" this dialogue. Now, when you open that shortcut, you will be promtped for the root password and the program will execute with root privlidges.
Sorry, I've never had the need to remove or switch of the Kwallet feature (I find it quite useful), so I don't really know how to remove it or reset the password.
Here's a few ideas -- again, I've not tested them, so I don't know if they work. Use at your own risk
1) Go to /home/user (user being your account name, obviously.) Navigate to the /.kde/share/config/ directory and look for a file named "kwalletrc". Open it with kwrite or kedit or such. Change the line that reads "Enabled=true" to "Enabled=false". I'm gussing that should turn off Kwallet.
2) If you're really fed up with Kwallet, deleting /.kde/share/apps/kwallet/ from your home directly should remove the password and any information associated with the application. Next time Kwallet pops up, I imagine that it'll be restored to its original state and you can tell the wizard that you don't want to use Kwallet in the future. The kwallet feature will then be disabled.
The above two points are just educated guesses. Feel free to try it out, but use at your own risk.
Please, anyone correct me if my assumptions are wrong.