i have a 300gb external harddrive that i used when i had a pc and now that i have a mac it isn't in the correct format (NTFS? i believe?) it worked fine 10.5.5 and 10.5.6 after updating to 10.5.7 however it doesn't show up as a harddrive when i plug it in, i tried this with my roommates late 2006 MB running 10.5.7 also and same result, however when i ran it on my other roommates late 2007 MB running 10.5.6 it picked it up fine and works fine i concluded that it is probably a problem with 10.5.7... i was wondering if anybody else is having this problem? and if there is anyway around this problem?