Just to round out the suggestions, if I remember correctly, the OP mentioned something about chat. For entirely dynamic, disposable data, perhaps a reliable database isn't what is called for at all. If the power shuts off, it may not matter that some chat log is lost.
I suggest to use the right tool for the job and PostgreSQL doesn't claim to cover all the bases. -M ---------------------------(end of broadcast)--------------------------- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq