Debian :: Hidden Processes On Squeeze X86?

This morning I ran unhide on my Squeeze x86 netbook. The brute force process detection came up with ahidden process. Repeated runs of unhide with the system in various states continued to show the process,but with a different PID each time.(Or maybe it was spawning new processes and killing itself every second or so. A newer version of unhide,which I compile from source, did describe the process as "maybe transient" or omesuch. Anyway, I've unhide on Squeeze before, and I know that detection of any hidden process is absolutely not normal.)Also, rkhunter found some hidden directories. Of particular note, I think, is /etc/.java, which contains evenmore hidden stuff. It *might* be system-wide preferences for the JVM, but somehow I doubt it.

So, I have two questions...1. Do I really have a rootkit or trojan infection? It looks like it, but I want confirmation that I'm not chasingphantoms. (Or that I am, whichever.)2. If so, how can I prevent a recurrence? FWIW I was running without iptables or any other firewall, but I madesure all my ports were closed; and I did most of my browsing through Chromium, which should have pretty