Just to let anyone interested know. My connection issues all miraculously disappeared today after 6 days of getting the dreaded 10053 error message. I did absolutely nothing to fix the issue other than to write an e-mail to my ISP (PLDT) two days ago to PLDT complaining about my being unable to connect. They obviously were blocking service to the mIRC as two days later it began working with no issues so far. I sure hope this continues.