I have been using $regex alot lately to test out regexp's...
One thing I've noticed lately, it crashes mIRC
I don't know what that is causing it, but after doing a couple of advanced regexp's mIRC freezes.
This happens randomly, but still.. there is a bug there.
I wouldn't even report this if it wasn't for the fact that it is occuring a bit more too often than it should.
Sorry about not being able to give you any details to why this is happening, but since this happens randomly, I have no idea.
I would recommend going through the regex library you are using and look for possible leaks, interferance with other classes(?) or basically other stuff that might be causing it.
Oh and another "bug" (not mIRC related though.. more of a windows bug, it's just funny);
In the Install/Uninstall features, it lists mIRC with a filesize of over 1GB (All directories are empty)