Quite suddenly, both the launchers for STO and CO have stopped working for me. I can't even get the launcher screen to come up, even though a process can be seen in the Windows XP process list when I ctrl-alt-del.
The programs are permitted in my firewall, have tried with antivirus disabled, plus STO still worked this morning.
I actually fixed the problem, here's how in case someone else gets it.
After the latest patch cryptic launchers were somehow hiding themselves in Windows. I couldn't get the out any other way but doing a forced maximize window with a program called Process Explorer. After that, everything's working fine again.