Following a recent upgrade of cacti from 0.8.7g to 0.8.7h i noticed a problem with the poller output. When the poller attempts to parse the output in order to generate rrdtool update command, the output is incorrectly interpreted as a hexadecimal number and the resulting update command looks like this:

11/16/2011 08:55:35 AM – POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /var/lib/cacti/rra/server_520_333.rrd –template 1321433734:2.0177678937406E+118
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Servers by default display information via Apache and PHP that makes them vulnerable. With Apache, the version number and installed module versions are listed at the bottom of 404 error pages and on HEAD requests. With PHP, because it runs on our servers as CGI, when it processes php scripts, it adds the “X-Powered By” and displays the version number. In both cases this is not desirable as attackers can use such information to compromise the server.
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If you are using tsclient, a remote desktop client, and you connect in full screen mode it can be difficult to switch back to your linux session because there is no ‘connection bar’ at the top.

To toggle full screen mode, use the key combination Ctrl+Alt+Enter.