is tomcat acting up?

[developerinlondon]

I am wondering if my Tomcat is acting up. I am getting a high load on the server at peak times, but so far I was thinking it was apache that was causing it.
however recently I noticed that
a) tomcat does not seem to have any displays of its servlets on the admin panel. ie when I get to view the 'complete status' I dont see a list of the currently running threads like I used to do.
b) there seems to be just 1 java process on the system, whereas before it was at least 20.

However the specific servlet that I use through php scripts through apache does seem to be working properly.
I am using Debian linux kernel 2.6
Only difference is recently the kernel was recompiled to take advantage of the 2 cpus on the machine. Before it was using only 1 cpu.

any ideas on where I can look for this strange tomcat behaviour?

 

[developerinlondon]

I also found on a 'top' command that the 1 java process is using up 1gb of swap space and 1.1g of virtual memory... is this usual? I was (a) expecting there to be many java processes and (b) not use so much virtual memory.