After reviewing the blockchain.info wallet source code, I can not recommend using it at the moment. I had a full monty write-up on this earlier, but as I've dug deeper I've decided to take it down so I can communicate my findings to blockchain.info exclusively first. Stay tuned.
Do you advise to meanwhile sweep funds to a fresh new address with blockchain wallet? Is the blockchain wallet safe to make transactions with manual key rotation?
If you are feeling careful, IMHO it would be wise to move to a non-javascript wallet for the time being ... and when you move, do it with a single transaction ... that way even if your signature(s) expose the private key you're moving from, they'll be nothing there left to spend.