Carbon Copy (software) Carbon Copy was an early remote control and file transfer software for DOS and Windows published by Microcom. It allowed remote access to a computer via dial-up modem connection.
A viral infection (the common cold) is the most common cause of a stuffy and/or runny nose, but allergies, influenza, and sinus infections also may cause these symptoms. Less commonly, anatomical obstructions (e.g. a deviated nasal septum, foreign bodies) may lead to nasal congestion.
What causes post-nasal drip? Normally post-nasal drip can be caused by either an illness such as a cold or the flu, along with nasal allergies. A sore throat will occur many times with post-nasal drip because of the constant snorting, coughing, and clearing. You may also experience post-nasal drip if you live in a dry area, have certain food allergies or are a smoker. Pregnancy and birth control pills can also be the culprit for having this problem as well.