Hi all I have bought a Philips 48x CDRW CD-Writer drive. I have installed it to secondary-master position and my old CDR LG stays at primary-slave position My computer is pentium-4 1.5 Ghz with 128 Mb ram and windows XP proffesional running. Now my PC recognize my philips CDRW as G: normally. I divide my harddisk into 3 partitions. So C:, D:, and E: are harddisks. F: is CDROM drive and G: is CDRW But even everything seems to be o.k. I have a terrible problem with my CDRW. When my philips is enabled, my windows system freezes every minute for some 3-5 seconds, even sometimes my mouse is not moving. Than, everything go back to normal, than another freeze period and so-on.. If I disable CDRW device from control panel, my windows works fine without any freeze and everything is okay. All the problems started after installation of CDRW device and as the problems starts when CDRW is enabled and stops when CDRW is disabled, I put blame everything on CDRW device I have contacted philips but they did not help much. My sister has the same computer with same specifications. We bought two identical philips writer for both of us. She has no problems with it at all. But even the CDRW device and specifications of PC's are same, I am having diffuculties. The only difference is, I have XP-Proffesional and she has XP-Home editions. I manage to burn some CD's without any problem. I amn using last version of Nero software to burn CD's. But as I said, I have to disable CD-Writer unless I am burning CD's. Other times, I disable the drive from control panel and G: drive is disappeared from My computer screen so my pc works fine. You can guess this is very annoying. Do you thing that it is due to some software problem or XP-proffesional itself? What do you offer? I've tried to set IMAPI settings from msservices to "auto" or "off" but nothing changed. For the last try, I will format my harddisk and reinstall windows but I am not sure if it helps. I have no chance to test my drive with my sister's computer as she lives in another city very away from me. PLEASE PLEASE HELP !!!!