I think i've had some instability with the latest update 1.2(7) on Win XP 32bit
Here is what I observed:
1. Using Copperlan with a Unitor8 via USB, it starts sending what appears to be a reset command at odd intervals to the Unitor8. (I realise the Unitor8 drivers are ancient so perhaps that may be the issue here, I really don't know)
2. Ethernet port completely disappeared. Confirmed ethernet was working for other applications. Restarted application and even rebooted and did not fix.
I uninstalled and reinstalled 1.2(7) and the same thing happened.
I am back on 1.2(6) and everything appears normal.
regards
Dan