It is needed for such situations when icq becomes broken. For example, in November ICQ server switched from slogin.oscar.aol.com to slogin.icq.com Port also changed from 5190 to 443. So, Miranda couldn't connect to the given server. It is required to manually write down the new address/port or switch off SSL before 0.9.10. It was fixed in 0.9.10. Alina.