System hangs when I switch from one KNIME workspace to another

Hi,

I seem to encounter a problem. I notice that my computer system hangs,repeately, when I switch from one workspace to another after logging into KNIME. The KNIME version is 5.2.

Is there a way of clearing it so that I do not encounter the problem again. Or do I need to re-install KNIME.

Thanks

Krish