1) "connection refused" - that I noticed a lot for many RIGS ( DDOS protection is too restrictive or server is overloaded ) ;
2) many orphaned blocks caused by too late coin being disabled or bad configuration when there is a chain split
I believe the root of evil is the same for both: the hardware is too weak to handle more than a certain number of miners connections -> when this limit is reached, the stratum server falls off and miners start getting "connection refused" -> when stratum server goes up and miners resume working on the block, that block comes too late and the network refuses it (i.e. it becomes "orphan").
However, it's just my theory, I don't know what actually goes there.
Hello,
1. I do plan massive HW upgrade on weekend, now preparation goes full speed. Want to make it as smooth as possible for users.
Meanwhile yes, we are close to limits in current config.
2. I also do hope mining software developers will switch over to new stratum server name format. (We will change to .mine.zergpool.com: server name format, so you can start updating your configuration to support this slowly). This will make it possible to have different network routes for different stratum servers.
pinpin