not sure why encrypt wallet would be grayed out, but as far as i can tell export being grayed out is normal behavior.
you can grab your wallet at %APPDATA%\Litecoin if you are running windows, afaik.
Already have my wallet.dat in a truecrypt hidden volume stored offline. The thing that is troubling me is that I don't know if this wallet has had a passphrase set / been encrypted.
Reading the following thread, it states that if you encrypt the wallet then you have to re-type the password everytime you send a transaction:
http://bitcoin.stackexchange.com/questions/8125/how-can-i-tell-if-my-bitcoin-qt-wallet-is-protected-with-encryptionSo maybe that means I have never encypted it. Ideally I should remember, but I just have a blank spot and can't recall.
I hate stuff like this, as just one f**k up and I lose the lot.
I am now comtemplating the following.
1. Install litecoin-qt to a new machine (my laptop)
2. Encrypt (if it will let me)
3. Send all of my balance from my first wallet to the address in the new wallet.
4. Clean out the first wallet and move the new one accross from step 1 to my main machine.