In Avast AIS, 5.0.507, set up a virus alert via SMTP. Set the SMTP settings to something reasonable, but use port 465.
I'm using:
Server Address: mail.iinet.net.au (but also have reproduced this using a Yahoo server, so its not server specific).
Port: 465 (the key to hit the bug)
From address: Whatever@ozemail.com.au
SMTP Authentication: checked
User Name: username
Password: password
User name and password can be real, or fake like above - the bug happens either way.
Click OK to ensure the settings get applied (else a test seems to use previous settings - bug #1).
Re-open the settings and click the "test" button for the SMTP address.
Avast locks up (bug #2). Even end task does not help here (I assume since Avast resists forced shut down attempts), so a reboot is the only option. I've hit this about 10 times on about 5 different machines today, running different operating systems from Windows XP SP3, through to Windows 7 in both 32-bit and 64-bit flavors, so this isn't my imagination.
If this is not the correct place to log bugs, please let me know where to do it.
Thanks.