Lirc IR Blaster fails after computer has been idle

Hello,

I am using Lirc to control a serial ir blaster (irblaster.info) and
change channels on a digital cable TV decoder (Motorola DVi 5000). I
use this with MythTV on Fedora Core 4, Athlon XP 2400.

During a typical evening I watch TV and channel changes work properly
and reliably. However, if I leave the PC running for a few hours and
then try to change channels, it appears that the lirc process has been
paused or suspended. The first 5-10 attempts to change channel will
not cause any output from the ir blaster and then it seems to come to
life again and start working correctly.

 The result of this is that MythTV missing channel changes for
scheduled recordings.

I am not sure how to proceed in debugging this. Which logs should I
check? How could I analyse this affect and try to resolve the problem?

Many thanks, I'm new to the list so I apologise if I missed the answer
to this when I checked the archives.

Thanks,
/michael


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