The problem is not with the wallet, the problem is with the client 0.7 which was mining. It was not able to accept block chain height 225430.
So,
- if you are using 0.8 -- do not worry
- if you are using 0.8 and mining - stop mining and wait till proper instruction comes from the core development team.
- if you are using 0.7 and not mining - do not worry
- if you are using 0.7 and mining - stop mining and wait till proper instruction comes from the core development team.
blockchain.info has the same alert message and also
https://mtgox.zendesk.com/entries/21477395-Bitcoin-blockchain-issue-bitcoin-deposits-temporarily-suspended has stopped accepting deposits / inputs
Do not spend, till further notice comes from the team of core developers.