How can I enable trusted X11 forwarding on Putty (with Xming) or otherwise get rid of one second delay when starting X11 aplication?

I've noticed one second delay before Midnight Commander or mcedit starts in Putty. It took me a while before I realized it is caused by X11 forwarding enabled. mc -X start immediately. Unfortunately starting any X11 application has same delay. Maybe I'm nitpicking but it drives me crazy. Especially because some users mentioned cause and solution for this: xming does not support X11 security, so Linux must wait for network timeout. It is on second for me, but 30 seconds for others according to some discussions. The solution is trusted X11 forwarding enabled by -Y commandline option for ssh. Unfortunately Putty doesn't have this option. Is there any other way to enable trusted forwarding on Putty ?