old wallet imported into electrum still safe after May 15?

[nonsh]

I have an old wallet (created with official client, version 0.4 or so) where I like to keep the address, because it has been given away and may still receive sometimes.

When I import it into Electrum (as no deterministic wallet) will the BTC stay safe or do I have to get 0.8.1 of the official client for that?

Electrum isn't affected by this May 15 debacle at all?

[Tachikoma]

Your public/private keypairs are not affected by which version of a client you are used. These are defined by the protocol itself. You can import those into Electrum at any time you want and it will work. Just make sure you have a paper backup of the keys somewhere since it won't be part of your deterministic sequence for Electrum and the keypair won't be restored when you restore from seed.