April 1 - ZA notified suspicious behaviour for internet access for PDFUPD.exe. Denied access, ran virus check and removed above Trojan.

2 April ZA virus check ran automatically on startup (don't know why as it was not the default setting), found above trojan again and removed.
Tried to look at ZA Alerts and Logs tab but window
closes immediately and after a few seconds ZA shuts down completely
without notice.
Unable to find information on virus or exe or why ZA shuts down.
Do I have
a problem?

Operating System:Windows XP Pro
Software Version:8.0
Product Name:ZoneAlarm Internet Security Suite