Hi Ashen,
It looks like something is trying to proxy Minion's secure API connection to api.mmoui.com on port 443.
The last 2 warnings in the log show that connection trying to be converted to 192.168.207.25 port 3128 which looks like a proxy? It seems to only happen on the SSL connection. The connection to our CDN over port 80 looks fine as it shows you've downloaded the Minion font in the log.
Code:
<record>
<date>2014-06-28T09:30:40</date>
<millis>1403940640693</millis>
<sequence>15</sequence>
<logger>com.zam.minion.util.FeedClient</logger>
<level>WARNING</level>
<class>com.zam.minion.util.FeedClient$HeadThread</class>
<method>run</method>
<thread>24</thread>
<message>IOException: Connect to 192.168.207.25:3128 [/192.168.207.25] failed: Connection timed out: connect</message>
</record>
<record>
<date>2014-06-28T09:30:40</date>
<millis>1403940640700</millis>
<sequence>16</sequence>
<logger>com.zam.minion.util.FeedClient</logger>
<level>WARNING</level>
<class>com.zam.minion.util.FeedClient$HeadThread</class>
<method>run</method>
<thread>25</thread>
<message>IOException: Connect to 192.168.207.25:3128 [/192.168.207.25] failed: Connection timed out: connect</message>
</record>
What are your network settings under Firefox?
Open Firefox, go to Options >> Advanced >> Network >> Connection (Settings) ?
I've submitted this log to our java programmer to see if there is anything we can do on our end.