[syslog-ng]last message repeated?

Is there a particular reason why syslog-ng doesn't generate "last message repeated x times" messages? It's very unfortunate to have the disk on my log server fill up because of one machine flooding the logs. For example, Solaris will send one "WARNING: /tmp: File system full, swap space limit exceeded" message for every write() that fails for that reason. It's easy to get tens of thousands of these per second.