fixation

My CD writer is going mad. Whenever I write CDs, it reaches upto 100% and when it is showing 'Lead in and Lead out', it gives me Session fixation error. I didn't get this problem earlier. Sometimes it even occurs at 50-7-% when I write video CDs. Help needed seriously.

am having lg combo drive model HL-DT-ST RW/DVD GCC4521B after writing all the cds am getting the following error 1. pma update failure 2. could not perform end track 3. session fixation error 4. could not perform fixation 5. power calibration error am getting the above errors...

i have a sony dvd combo drive...... when i write a cd it writes upto 3 percent and then stops for a while........ after that it gives cannot perform fixation erorr... wat should i do???????????