If you find a bug, please send a bug-rapport to the mailing list, including dmesg(8) output, and which linux version, and hardware you are using. Thank you!
1.The remote device suddenly stops accepting frames, and the link goes down. If the link does not come back up again, the only thing to do is to break irattach, rmmod irda, and start all over again.
2.The machine suddenly freezes! (deallocation of non-allocated memory, forgotten timers, non valid pointers etc ...). Haven't had this problem in a long time, so maybe the problem is gone?
3.The irattach program crashes when you break it with ctrl-c, and /dev/cuaX does not work anymore. The problem is within the irda module, and not with the irattach program. Rebooting is the only thing to do!