In order to work around the problem of "waiting for coins to arrive from a confirmed swap" I do the following:
- type in a "1" in the "unc field" of the respective coins involved in the confirmed swap as well as a note "swap with person xxx" for myself in the "comment field" of each of these coins
- As soon as I get the coins I delete the comment, delete the "1" in the "unc" field and type in a "1" in the appropriate quality field for the received coin (of course it is always nice if I can leave the 1 in the unc box
).
That way, whenever you start a new swap while the coins of an old swap are on its way to you, the website recognizes these coins as "coins already in your possession". Hence, you don't end up swapping the same coin twice. Maybe that helps you a little.
As for the problem of "two overlapping" swaps I don't have a solution, posted a comment about that same issue before, hope it gets solved soon.