graphs problem

[liimuu]

i have a problem with graphs
see 1.GIF
but the next is ok
see 2.GIF
why ?Tanks

system :FC5
software:
cacti-0.8.6i
rrdtool-1.2.15
net-snmp-utils-5.3-4.2
net-snmp-5.3-4.2
net-snmp-libs-5.3-4.2
net-snmp-devel-5.3-4.2
mysql-bench-5.0.18-2.1
mysql-devel-5.0.18-2.1
libdbi-dbd-mysql-0.8.1a-1.2.1
mod_auth_mysql-3.0.0-3
mysql-server-5.0.18-2.1
mysql-5.0.18-2.1
php-mysql-5.1.2-5
httpd-2.2.0-5.1.2
php-snmp-5.1.2-5
php-5.1.2-5

[gandalf]

Please make "Settings -> RRDTool Utility Version" equal your "rrdtool -v" output
Reinhard

[liimuu]

My question has solved .