I noticed there are several other similar problems, but solutions offered there couldn't help me. My seagate baracuda 7200.9 SATA 300-GB Hard Drive labeled ST3300622AS has an extreme slowlines problem I even used a stopwatch to measure the transfer rate and it was as slow as shown by HDTach at reading and writing data. I have an older motherboard ASRock K8UpgradeVM800, with an AMD Athlon64 2800+, 512 RAM, and another disk, older PATA Maxtor. WinXP on the older disk. This motherboard supports only sata up to 150MBps so I had to put a jumper on the disk as instructed on official seagate website to limit his standard 300MBps. Hopefully, someone knows what to do, cause I'm absolutley clueless why and how this happens.