asterisk users - Dec 2004 - Unable to open pseudo channel for timing... Sound may be choppy

Hello,

I just sent it with a wrong title... so once again:

I just compiled and started Asterisk 1.0.2 following "Getting Started 
With Asterisk Version 0.1a" from
http://www.automated.it/guidetoasterisk.htm

I made only one change to default config files - I changed from using 
oss to alsa.
I don't have any devices so far.

I started asterisk from the command line:

# asterisk -vc

and I got this warning (this was also before I changed from oss to alsa):

res_musiconhold.c:564 moh_register: Unable to open pseudo channel for 
timing... Sound may be choppy.


What does it mean? Is it something to worry about? How to get rid of it?


Tomek