Hi Holger

That's odd, I haven't experienced this behavior myself.
Have you tried restarting the wallet?
It's always best to encrypt your wallet too, so no one can access it even if they get a hold of your wallet.dat file.

You can also do a checkwallet from the console. Perhaps that clears it up.

We're working on an update of the wallet, but we need funds for it and so far we've not collected enough.

Another contributor made a small update already but we haven't had the time to review his changes.
Which we would like to do before we make it publicly available, obviously :-)

I agree, we need more nodes.
The only way to do that is by getting users to run the wallet themselves.
And for that we need to update it first.

So in short: we're actively working on it but we need to dedicate some time to it and we need 0.1btc for the developer.

Let us know if the inconsistencies in your wallet get resolved.

Have a nice day!