[vdr] delete no event timers

[Lou]

I noticed vdr 1.7.16 sometimes waits unusually long until a VPS timer 
set to "no event" is getting deleted.

Mostly it works fine, meaning: vdr will delete no event timers after a 
few seconds or minutes. But there are the occassional oddities, where it 
takes more than an hour, which in return will cause the media center to 
stay on longer than necessary during overnight recordings. This also 
would not encourage me much to leave vdr unmaintained for a few days 
during holidays.

Does somebody have a solution for this problem (e.g. a "recording-hook 
AFTER" checking timers, removing those dirty ones using svdrpsend) ?