I have not opened my wallet in a while. The minting process is hit or miss, but that could be my CPU causing that, for all I know. I have yet to sell/trade any Zeitcoin. I still plan on letting it mint as much as possible.
you might do better staking if you let the wallet run for a while, (a few consecutive days/mo), as the wallet will orphan all new stake while synching. you don't really 'loose' the orphans, though they're not spendable, coin-age is not lost and the coins will re-stake
