A new version of mIRC has been released which fixes the DCC vulnerability of all 6.x versions of mIRC. It's recommended that everyone upgrade to v6.12 at this time.
This version (predictably) still has the ScriptGuard conflict with Invision v2.0 bld 2520. However, you can still use the Invision Fix I made to let you use this latest version of mIRC with your Invision. Get it at #andr-serve on irc.axpi.net.
Cheers.
File Name: mIRC.v6.1--Invision.v2.0.bld.2520.ScriptGuard.Fix.v1.2.by.PopWeasel.rar
File Size: 70Kb