user-1: Some months ago, I installed bitcoin-qt on Ubuntu, created a wallet and address, then transferred funds to it from MtGox. I let it sync up for over 10 days, but it never fully synced. So I exported a wallet.dat file, then uninstalled bitcoin-qt.
Today, I installed MultiBit and imported the wallet.dat file. It is empty. It has one address which shows no transactions or balance on blockchain.info. The wallet in bitcoin-qt had several addresses.
What happened? Is there anything I can do to restore the files containing my bitcoin?

user13012: I had the same problem. What I had to do is delete the copy of the blockchain and let the newly installed bitcoin qt download and sync from scratch. All was good after that.

-1: <p>Some months ago, I installed bitcoin-qt on Ubuntu, created a wallet and address, then transferred funds to it from MtGox. I let it sync up for over 10 days, but it never fully synced. So I exported a <code>wallet.dat</code> file, then uninstalled bitcoin-qt.</p>

<p>Today, I installed MultiBit and imported the <code>wallet.dat</code> file. It is empty. It has one address which shows no transactions or balance on blockchain.info. The wallet in bitcoin-qt had several addresses.</p>

<p>What happened? Is there anything I can do to restore the files containing my bitcoin?</p>
 13012: <p>I had the same problem. What I had to do is delete the copy of the blockchain and let the newly installed bitcoin qt download and sync from scratch. All was good after that.</p>
