Cacti not polling my router anymore

Dear Community,

I am using Cacti 0.8.8a on CentOS Linux. It has been running for a while 
now, but I recently ran into some problems where my Traffic graphs stops 
updating.

First time it happened it seemed to be connected to an import of new 
Cacti templates. I fixed it by removing all the old graphs and re-adding 
them again - but we lost all historical data.

Now we have run into the same issue again, but this time only for a 
single router. The router was rebooted around the same time the graphs 
stopped working, which could be related to the problem.

When I show a graph list for the router, all the graphs are listed, but 
the "Template Name" was reset to "None".
http://i.imgur.com/bbep6.png

The CPU graph still works fine and the new graph I added (ID 601) works 
fine as well - and according to Spine, they are also the only graphs 
being polled:
http://pastebin.com/e0NRRQr8

I tried to select a template for graph 224 and 225, but this did not help.

The table "poller_item" only contains three entries for the host:
mysql> select hostname, rrd_name, rrd_path, arg1 from poller_item where 
hostname='rtr3.cnx.awareidc.com';
+-----------------------+-------------+----------------------------------+--------------------------+
| hostname              | rrd_name    | rrd_path                         
| arg1                     |
+-----------------------+-------------+----------------------------------+--------------------------+
| rtr3.cnx.awareidc.com | 5min_cpu    | /usr/share/cacti/rra/49/474.rrd  
| .1.3.6.1.4.1.9.2.1.58.0  |
| rtr3.cnx.awareidc.com | traffic_in  | /usr/share/cacti/rra/49/1019.rrd 
| .1.3.6.1.2.1.2.2.1.10.19 |
| rtr3.cnx.awareidc.com | traffic_out | /usr/share/cacti/rra/49/1019.rrd 
| .1.3.6.1.2.1.2.2.1.16.19 |
+-----------------------+-------------+----------------------------------+--------------------------+


I know I can delete all the graphs again and re-add them, but I'd like 
to find a better fix for this where I don't lose all my historical data. 
If possible I'd also like to know what causes this to happen, and what I 
can do to avoid it from happening again.

Does anyone have any ideas for what to do next?

Best Regards,
  - Johnny Carlsen



------------------------------------------------------------------------------
Don't let slow site performance ruin your business. Deploy New Relic APM
Deploy New Relic app performance management and know exactly
what is happening inside your Ruby, Python, PHP, Java, and .NET app
Try New Relic at no cost today and get our sweet Data Nerd shirt too!
http://p.sf.net/sfu/newrelic-dev2dev