lighttpd forum XCache > Jumpy hits situation in XCache, please help

My problem is that I have the jumpy hits situation. as described in 
http://xcache.lighttpd.net/wiki/Faq#Iseejumpyhitsinadminpage


I'm on dreamhost PS server. using the Xcache default installation. See 
server info below. I tried the following without success:

Removed suexec

Changed maxClassProcesses of fastcgiconfig from 2 to 1

Don't know what to do next. Thanks for any help.

Server info Linux ps16413 2.6.22.19-grsec2.1.11-vs2.2.0.7 #10 SMP Tue 
Aug 4 14:56:37 PDT 2009 x86_64 Server API CGI/FastCGI

My process tree looks like this:

init(1)-+-apache2-ps16413(28241)-+-apache2-ps16413(18729)

        |                        |-apache2-ps16413(18864)

        |                        |-apache2-ps16413(18867)

        |                        |-apache2-ps16413(18924)

        |                        |-apache2-ps16413(18927)

        |                        |-apache2-ps16413(18929)

        |                        |-apache2-ps16413(18954)

        |                        |-apache2-ps16413(18955)

        |                        |-apache2-ps16413(18956)

        |                        |-apache2-ps16413(21840)

        | 
`-apache2-ps16413(21841)-+-php5.cgi(16362)
        | 
|-php5.cgi(16367)

        | 
|-php5.cgi(16378)
        | 
|-php5.cgi(16411)
        | 
|-php5.cgi(16413)

        | 
|-php5.cgi(16416)
        | 
|-php5.cgi(16417)
        | 
|-php5.cgi(16491)

        | 
|-php5.cgi(16493)
        | 
|-php5.cgi(16501)
        | 
|-php5.cgi(16504)

        | 
|-php5.cgi(16507)
        | 
|-php5.cgi(16509)
        | 
|-php5.cgi(16528)

        | 
|-php5.cgi(16560)
        | 
|-php5.cgi(16599)
        | 
|-php5.cgi(16620)

        | 
|-php5.cgi(16622)
        | 
`-php5.cgi(16623)

        |-atd(19510)
        |-courierlogger(19212)---authdaemond(19213)---authdaemond(19214)

        |-cron(19513)
        |-inetd(19364)

        |-master(19427)-+-pickup(7142)

        |               `-qmgr(19430)
        |-sshd(19196)---sshd(18838)---sshd(18840)-+-bash(18842)---su(18942)---b+
        |                                         `-sftp-server(18841)

        |-syslog-ng(19182)

        `-ud(19537)