Job does not continue

Hi,

I have windows 2003 server/exchange 2003 std.

After a short time,the job in backup exec does not continue backing up information store. (it starts and after a few seconds does not continue).

I uninstalled the agent in the exchange server and after restart i setup agent again - it didn't help.

I also cannot backup files and folders.

I also restart the backup server.

backup exec is up to date.

Please help

Giyora