Random auto ejection of my CD Drive

[sip]

I have Samsung CDRW Writer. For last 3 months it was automatically getting ejecting randomly and closing without user interation. I did virus scan(Norton, Mcafee, Kaspersky, AVG) with latest virus database (upto data virus database) but no virus found.
Still CD auto ejection happening randomly.

When I tried to write first cd, it will get corrupted due to this auto ejection, while writing itself it will get eject. If I restart system and start writing continuously i can write any number of cd without any problem. but next day i start write cd again same problem for first cd.

can anyone help to find the solution to stop this auto ejection problem

thanks in advance

[Able]

This is unusual! what make and model is the CDrom drive?