0,0001 BTC είναι το χαμηλό fee που προτείνουν συνήθως (και δεν πηγαίνει με το ποσόν της συναλλαγής αλλά με τα KB του πακέτου). Αυτό έχω βάλει και εγώ στο Electrum και δεν έχω πρόβλημα. (Ως μέσο fee προτείνουν συνήθως 0,0002 BTC, και ως υψηλό, για πολύ γρήγορες συναλλαγές, 0,0005 BTC). Είδες υποθέτω εδώ τι λέει:
https://bitcointalk.org/index.php?topic=1208286.066 - means your fee is not high enough. Do you use the dynamic fee setting? If so, move the slider to the right until you no longer get that error.
64 - dust is any output below 2730 satoshi. If you either try to send an amount that little or if you have 2730 or less satoshi left that is send back to you as change the transaction has a very high chance to not get accepted by the network.
It looks like the faucets are depositing lots of very small transactions into your Electrum wallet thereby creating "dust" (very small transactions) to many different addresses in your wallet. Each transaction goes to a new address. In order for Electrum to generate a "spend" transaction it must consolidate the amounts in all the different receive addresses. This can be time consuming as well as costly. You might want to consider sending most of your BTC to a different wallet (like Coinkite for instance) and then sending it back to your Electrum wallet. This will consolidate the funds in the many small-transaction addresses and create a single address with most of your funds. This will allow you to make cheaper, more timely spend transactions.
