"sig-mon" java.lang.NullPointerException
    at sun.misc.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1017)
    at java.lang.Double.valueOf(Double.java:504)
    at imperial.modaclouds.monitoring.datacollectors.monitors.SigarMonitor.run(SigarMonitor.java:131)
    at java.lang.Thread.run(Thread.java:745)
11:35:06.300 [pool-2-thread-1] DEBUG i.p.t.data_collector_library.DCAgent - Downloaded dc configuration, nothing changed from previous config
11:35:16.463 [pool-2-thread-2] DEBUG i.p.t.data_collector_library.DCAgent - Downloaded dc configuration, nothing changed from previous config