I'm getting warnings on core system memory low. I'm looking at the prtg system status, i.e. core memory printout and can't detect why. The system is a Win 2003 R2 32bit with 16Gb of ram. The PRTG system process uses only 1.6GB so neither the 4GB limit for 32bit systems is hit, nor the OS has low memory.
Here's the core server log: http://pastebin.com/KsQHcA8r