[Serusers] buffer size exceeded

[Matt Hess]

When some clients switch lines (from line 1 to 2) while they have a 
current call on line 1 the server spits out:

Feb  3 06:52:33 tranquility /usr/local/ser/sbin/ser[20741]: ERROR: 
warning_builder: buffer size exceeded
Feb  3 06:52:33 tranquility /usr/local/ser/sbin/ser[20741]: ERROR: 
warning_builder: buffer size exceeded
Feb  3 06:52:33 tranquility /usr/local/ser/sbin/ser[20741]: WARNING: 
warning skipped -- too big

I'm using the config I last sent to the list.. hints?