Problem with asterisk ( latest version )

Hey… I have tried the latest asterisk 1.4.4 and the svn and still it crashes randomly every day or two. Basically asterisk is not down but it stops sending/receiving calls. It is as if everything is there but nothing works. I have checked verbosity and still displays nada. Once i stop and start asterisk again then verbosity sshows everything scrolling by again.

Any ideas ? anyone encounter this ?

What are the specs of your server? did you have this problem before installing the new version of asterisk? Do you have any TDM cards installed?