Temporary's Temps currency (Ŧ) is built upon the Ethereum blockchain, a decentralised application platform. Ethereum is still very much an experimental, bleeding-edge technology and has been undergoing many DDoS attacks in the recent weeks. This means that many of our transactions involving Temps being created, transfered or spent are not being processed, or not being processed for hours.
If you see a red alert sign in your activity feed, that means your transaction was not successfully mined on the blockchain. Rest assured that we are doing everything in our power to fix this (which, honestly, there's not much we can do) and that when the blockchain is healthy and stable again, all missed transactions will be re-submitted.
In the meantime, you can still write proposals, comment on them, and pledge to them! And we are still open daily for the Open Days experiment, where you can receive 10Ŧ for attending (even if it make take a few hours (or days) for the Ŧ to actually reach your account).