There is a memory leak when connecting to WMI it seems.

To verify this, follow these steps, but note that you need atleast mIRC 6.16 and Windows 2k pro or higher:
  1. Download $memuse
  2. Load it in your remote: alt+r -> tab "Remote" together with the following code:

    Code:
    alias memleak {
  if (!$isalias(memuse)) return
  .timermemuse 5 2 echo -a $!memuse(mirc.exe,1,m).suf ** $!memuse(mirc.exe,2,m).suf
}


    Make sure that the alias is on 4 lines as it is shown in this post.
  3. If you only have 1 mIRC open, then type: //run $mircexe
  4. In the original mIRC (not the one you just opened) type /memleak

Each time the identifier $memuse is called, the memory usage for the calling mIRC is increased. As far as I can tell, the code in $memuse does what it's supposed to do to prevent memory leakage, leaving me to believe that this is an mIRC issue.

Gone.