When you say it "keeps" crashing, what do you mean? Randomly? At regular intervals? Upon certain things occurring (pasting, opening the scripts editor, etc.)?

Are you using any scripts/DLLs? If so, does mIRC still crash with them unloaded?

I assume this is with the latest version of mIRC aswell (6.35)?

Wims: You'll notice this wasn't posted in the Bugs section, so clearly the OP isn't trying to blame mIRC for anything. Posting here won't fix the problem in WINE, but it's entirely possible he just wants a workaround and this isn't an unreasonable place to look for one given the likelihood of others using mIRC with WINE (like me for instance).