2 hr MWI delay

Applies to Asterisk 1.4.0

This issue crops up every other day

I restarted voicemail.so and nothing
I added checkmwi=10 to voicemail.conf and reloaded voicemail.so and nothing
I reloaded sip.conf and nothing
I added checkmwi=10 to general context in sip.conf and reloaded and nothing
I added checkmwi=10 to a specific sip channel and nothing

#service asterisk restart (resolves the problem)

Not a good fix if you ask me.

Any suggestions