It has 1024mb, what is the max? It seems that at a certain point the java process starts to consume 100% CPU continuously, this probably is at the moment he reaches this 1Gb ceiling...
The OS is a Windows Server and we have 4Gb available but I remember that increasing the amount didn't seem to reflect in the amount of memory shown at the servoy admin page, are there several setting for this?
In the mean while we received an intermediate 5.1.4i2 so our clients problem is solved for now.