Takuma and European who have AltGr problem, Open "Regional and Language Option" in Control Panel. Add English as input language. After XFree86/Cygwin start, change language to English using Shift+Alt key.
Doesn't this help you? It seems that we no longer receive fale CtrlL if I set default Input Language German. If this works on non-Japenese Windows, following code do this automatically. LoadKeyboardLayout ("00000409", KLF_ACTIVATE); Kensuke Matsuzaki