The only issue I've encountered so far is a communication error between Ethereum Wallet and
geth via the IPC socket (running on Linux).
This error fixes itself after about 5 minutes. I can then send transactions and watch contracts successfully.
I've so far encountered one error with Ethereum Wallet 0.7.2 communicating with
geth using the IPC socket, in Ubuntu 14.04.4 LTS .
If I try to browse a contract, the screen appears blank as shown below:
If I select the Developer -> Toggle Developer Tools -> Wallet UI menu and browse the Console, I get an error message "IPC Connection Error" (shown in red).
If I then wait about 5 minutes and then try to browse the contract again, the expected READ FROM CONTRACT and WRITE TO CONTRACT fields are correctly displayed as shown below:
I've just spent about an hour trying to send some ethers to TheDAO and worked out that this IPC problem is the cause for the transaction failing.
I reported this same IPC socket issue #515 to the developers 11 days ago when I was testing Ethereum Wallet as documented in How to watch contracts on Mist without ABI?, but there is no progress on this issue yet.