asterisk users - Feb 2007 - 1.4.0 spews garbage on CLI, crashes

Hi, I just installed asterisk 1.4.0 on my mac.  I compiled from source
with no issues.  I installed the sample config files, and basically
just added a register line to sip.conf (to register with a Free World
Dialup account).

Then I called my asterisk system from a different computer (using
x-lite softphone on windows xp, registered to an ekiga.net account).

Asterisk answers, and I can hear the prompts etc.  However, after a
while, (regardless of what I do with the demo menu options) asterisk
starts spewing garbage to the console, then some error messages, then
eventually dies.

Here is a condensed output:

<snip startup messages>

Asterisk Ready.
*CLI> sip show registry
Host                            Username       Refresh State
     Reg.Time
fwd.pulver.com:5060             829262             105 Registered
     Sat, 24 Feb 2007 16:05:17
*CLI>     -- Executing [s@default:1] Wait("SIP/5060-01828e00",
"1") in new stack
    -- Executing [s@default:2] Answer("SIP/5060-01828e00",
"") in new stack
    -- Executing [s@default:3] Set("SIP/5060-01828e00",
"TIMEOUT(digit)=5") in new stack
    -- Digit timeout set to 5
    -- Executing [s@default:4] Set("SIP/5060-01828e00",
"TIMEOUT(response)=10") in new stack
    -- Response timeout set to 10
    -- Executing [s@default:5] BackGround("SIP/5060-01828e00",
"demo-congrats") in new stack
    -- Playing 'demo-congrats' (language 'en')
    -- Executing [s@default:6] BackGround("SIP/5060-01828e00",
"demo-instruct") in new stack
    -- Pla;ing 'demo-instruct' (language 'en')
:
v\243\250\330\252z[\344\207.\233\343\2224\333l^K^W\230S\307t\316IJ\303\254\253^S\263\264G$\2161[\327$\2037\212fVW$l
*CLI> VW$l;~en#DA;fblB&YY5Bjd

<snip tons of garbage>

*CLI>
                                                       :
S;\262\335T\214k\363\2204\233`\212J\341B\271\\242^F\373\260I\354)kim\310\306\324^T}\265\235\346\350o[\215@\242P\246^\214q\2725\350\304\372S\260\264\267\342\205jS\216#7\323\326v\264\344\225D\267[eGy\335^D+b#\231\333\333Dj\210\316zf\217E\326\214\223\245-\324\326V\271\232\221\303^EF\220\331X\217\243\234%\342GZ\217\204w#q\272\316\221\344\326l\221\310'\326X.\371\222\327&X\244\357\221$J\332^A\233\372\331\343$^L+L\362\333\204D\234\243Tt\325\227F\375\221\223\243G^_\211-\213\335\243I=,\354\\225d\263'\212I"\341#\207oj\272\352\325^T\206\275D\343$\214\363\262KQ\233^D^K#u\334\225\352\242\355\\227\346[Feb
24 16:07:20] WARNING[777]: codec_gsm.c:140 gsmtolin_framein: Invalid
GSM data (1)
[Feb 24 16:07:20] WARNING[777]: translate.c:197 framein: gsmtolin did
not update samples 0
[Feb 24 16:07:20] WARNING[777]: codec_gsm.c:140 gsmtolin_framein:
Invalid GSM data (1)
[Feb 24 16:07:20] WARNING[777]: translate.c:197 framein: gsmtolin did
not update samples 0

<snip tons more of this>

[Feb 24 16:07:23] WARNING[777]: codec_gsm.c:140 gsmtolin_framein:
Invalid GSM data (1)
[Feb 24 16:07:23] WARNING[777]: translate.c:197 framein: gsmtolin did
not update samples 0
[Feb 24 16:07:23] WARNING[777]: codec_gsm.c:140 gsmtolin_framein:
Invalid GSM data (1)
[Feb 24 16:07:23] WARNING[777]: translate.c:197 framein: gsmtolin did
not update samples 0
Bus error
d66-183-116-232:/Users/swebster admin$

*** That's it, the process has died.  Any ideas on the cause of this?
Or solutions?

Thanks,

Scott