Starting the Spectrum OneClick java client using OpenJDK and OpenWebStart can take a long time (up to 2-3 minutes). This article outlines how to reduce the startup time if you are using HTTP to access Spectrum OneClick.
Note that this does NOT apply to clients using HTTPS to connect the OC client to the OOC server.
Spectrum OneClick client using OpenJDK and OpenWebStart
Do NOT use this setting if you are using HTTPS to access Spectrum OneClick.