graphs are not displayed after refresh

[zeisi]

Binary package hint: mrtg-rrd

Using 9.04, apache 2.2.11-2ubuntu2.2, mrtg 2.16.2-3ubuntu, mrtg-rrd 0.7-1, perl 5.10.0-19ubuntu1.1

Opening the cgi-page once works fine, but when i refresh the page in firefox the graphics disappear. www-data user has write access, but it seems that the script isn't able to overwrite the existing graphs.

I'm not a perl expert, but i think I found possible solution:
delete existing graphs before creating new ones.
I added the line
unlink glob (($tgt->{config})->{imagedir}."/*.png");
after
my ($tgt) = @_;
in the subroutine do_html around line 124.
That solved the problem for me.

[FTP-Admin Uni-KL (ftpadm)]

This Bug is caused by librrd, rrd_graph() which returns an image-size of 0x0.
See http://bugs.debian.org/484211

[Kenyon Ralph (kralph)]

This bug was fixed in Lucid since it has rrdtool 1.3.8, and rrdtool newer than 1.3.7 fixes this bug.