Upgrading instructions:

1. turn off siad. If you are really paranoid, reboot your computer to achieve this.
2. back up all wallets. make sure siad is not running when you back up your wallets
3. download 0.3.3.3 from github and put it in a new folder. do not run it yet
4. copy (or merge, both are fine) the most recent wallet into the wallet folder of 0.3.3.3 put it in the folder containing the executable, home folder will not work anymore
5. start running 0.3.3.3, never run 0.3.3.2 again.

There is a hard fork coming in the next few days, and everyone (especially miners) needs to upgrade.

If you do the backup wallets step correctly (back up wallets while siad is not running, and then do not upload/mine/host/make transactions until you have all of your coins again), then I can help you recover your coins if you mess up on another step.

Please follow these instructions carefully, and you will be able to upgrade without losing coins.

Sorry for the hassle, the upgrade process for 0.4.0 will be much simpler.