My SDL 2007 Trados is extremely slow to open indesign CS3 inx files, it takes over 45 min to open a 1.8 MB file in TagEditor.
The filter may be incredibly slow.
The DVX filter works in a breeze but it has less options.
If it's enough for you, it may be interestiing.
If you work frequently with InDesign files, you may try other CAT tools (DVX is only an example).
Is there any work around to get the files to open quicker?
If your files are on the LAN, try to work on a local HDD.