user3051: I got the following error 
Error initializing database environment /home/rune/.bitcoin!  
To recover, BACKUP THAT DIRECTORY, then remove everything from it except for wallet.dat.  

when I run bitcoin-qt..
I am using Ubuntu.  

user13963: back up all the files in .bitcoin.  then delete them all restart the wallet see if it errors.  If it does, re-download / re-install the client otherwise corupt configs.

3051: <p>I got the following error </p>

<pre><code>Error initializing database environment /home/rune/.bitcoin!  
To recover, BACKUP THAT DIRECTORY, then remove everything from it except for wallet.dat.  
</code></pre>

<p>when I run bitcoin-qt..<br>
I am using Ubuntu.  </p>
 13963: <p>back up all the files in .bitcoin.  then delete them all restart the wallet see if it errors.  If it does, re-download / re-install the client otherwise corupt configs.</p>
