Hey, I usually had spotlight search disabled, cause I don't really use the search at all .. well that was until yesterday I was looking for a file on the backup drive. Needless to say it took quite a while to find it, so I went back to considering spotlight again. Long story short I switched on indexing for both the local disk (160GB) and the USB Backup Disk (1.5TB) and left spotlight running over night .. it is not quite there yet .. but the index is already almost 40Gb in total .. that is 20GB locally and then another 19GB on the USB disk. So my question .. is that normal? Does spotlight store the index of the external disk locally again? I can't imagine the index of the ~100GB I have stored locally to be that big .. Is it something normal while indexing and will reduce itself when it is done? People usually report their indexes well below 1GB for larger disk than I use here at least that was what I found googling. Any tips, comment, help is appreciated. Thanks for the answers. T. PS .. that is on a 10.6.4 system and a HFS file system on both drives.