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$sslkeyfile was not mentioned in the beta announce post, nor was it in beta.txt. Are there any other identifiers which were added?

Arnie says that he can neither confirm nor deny this possibility.

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The way I read the above, the entry for a server in servers.ini always must contain the GROUP: tag, however creating a server while leaving the groupname blank creates an entry without the GROUP: tag. Both of the following items appear identically in the dropdown list.

n155=foobarSERVER:irc.foo.bar:6667
n156=random serverSERVER:irc.foo.bar:6667GROUP:foobar

You are mixing up two different issues here.

The first is that GROUP: is needed in the servers.ini server definition if the extra options are used. This is already handled by the code. I mentioned this only in case a scripter wanted to write to the servers.ini using their own script.

The second is the way the items appear in the listbox in the connect dialog. This is not related to the group definition. It is a legacy behaviour relating to how the "random server" description is handled. There are actually some other word combinations that do the same thing. This cannot be changed.