i am seeking advice here i recieved My new WD My Book Pro 750GB to be added the another one i have. i am planning to do some video editing and animation (avid and after effects) .. as a hobby though .. i have and iMac, Al 2.8 24" 4GB i wanna use one as a storage bin to my files .... i wanna use the other for video and animation stuff. but i want to use both platforms, mac and windows so my firt guess is format this hard drive as 1 HFS+ and 1 NTFS for both platforms. but the reason i got the My Book Pro is its reliability and the fast FW800 port. As my Al iMac has only 1 FW800 port, i will be able to use only one hard drive with FW800 at a time. I dont like switching cables every time i reboot. (this is why i dont want to format the drives both drives as NTFS or HFS+ unpartitioned) so the question is, will the partitioning affect the speed i get from the FW800? if i opt to format one drive as HFS+ and the other as NTFS, will the backup files affect the performance of the drive when it is used intensively for video editing?. I mean, a dedicated drive could be better than a drive filled with something else. another thing Under xp i did a speed test and it took 00:02:34 to write an image (4.5GB) to the exteranl drive via FW800. does that seem good? My concern here is that, when i gave the copy command (under xp of course) the estimated time remaining was as follows 2mins when about 8% of the file written 30mins for about 60s and transfer made it up to 15% 60s when about 20% of the file written and reduced gradually till the file was completely written under Leopard and formatted HFS+ it took 00.01.59 to write the same image. why is this so? Under mac u get nice speeds and steady performance. is this driver issue or is it just like windows s***s?! thanks for reading and for your expected opinion.