Ever since upgrading to 10.6 FCPX has been slow to import, not loading waveforms

@turbotbdad - Does FCP have Full Disk Access enabled? Full Disk Access is in System Preferences->Security & Privacy->Privacy. If you don't see FCP in the list, add it and make sure it's enabled with a check mark.

Whenever FCP crashes or starts acting strangely an easy thing to try is resetting the preferences. Hold option and command while launching FCP and choose Delete Preferences. It will open the default Untitled library. Re-open the library you were working on, set the preferences back to the way you like them (disable background rendering, reset Import to Leave Files in Place, etc.) and see if the issue has been resolved.

Have you deleted the render cache? Delete the render cache. Select the library in the browser, choose File->Delete Generated Library Files... Choose All Render files. Manage render files in Final Cut Pro - Apple Support 

You're running SoftRAID. Is your media is stored on the device that's SoftRAIDed? Have you tried running a test without the SoftRAID drives attached?

Have you tried creating a new admin user and logging in as that user to run FCP?

Please post an EtreCheck report https://etrecheck.com giving the application Full Disk Access in Privacy System Preferences. Copy the report an d use the Add Text button to paste the result into reply box. 

Looks to me like it's just a square pixel, 16:9, H.264, 29.97 mp4 @ 1 Mb/sec which should not be taxing in any way. Maybe it's encoded in a strange way by whatever created it. A security camera maybe? Does the problem happen with footage from other sources?

Also, you shouldn't need to Copy to Library on import (unless that's your preferred workflow). Just tick the Leave Files in Place checkbox and the import will be instant since it's not copying anything.

What are the specs of the media you're importing? Open them in QuickTime Player and post screenshots of the inspector. Like this:

That’s basic information from FCP. Please give the information Terry asked for from the QuickTime player or from the MediaInfo or Invisor apps. Even with this limited information it’s clear this a non-standard format. Where did this come from? A camera out something else?

@rreiner, start a new discussion with the specifics of your Mac and the issue you're encountering.

Your title seems to refer to an old problem with 10.6, but then you ask about 10.6.2.

If you are on the fence about updating, make a zip of your current version (control-click, choose Compress Final Cut Pro) and test. Libraries have to be updated, so either test with new libraries or back them up, in case we want to use them with the older version.

Yes so is mine but its doing more like crashing every time???