Have you tried going through the program process again and see if this resolve your issue, try dialing *228 and #1(Sorry just noticed you did.), I really do understand your point, hard resetting can be a pain and hopefully there will be other solutions than doing a hard reset all the time but at this time this seems to be the only universal solution for a large number of issues so Tech Support has made this a standard response but I am not sure this is needed under your situation.  Try these options first, these are separate and need to be done one at time...

•  Restart Device
•  Program phone and roaming (*228 and #1 and then hangup and then  *228 and #2)
•  Uninstall apps one at a time and then try a call, if it corrects itself this will be you problem app.
•  Check all radios - Cycle phone, wifi and plane modes
•  This may be strange but remove SD Card and boot phone and test. Remaining app info on SD can cause issues also.

The information about incompatible apps, CS are actually informing you correctly that there is a number of apps on market that hasn't became 100% compatible with Froyo 2.2 and can cause issues if installed but I don't know if there is a app that would effect the phone like reported ... Try a reset if nothing else works but follow this method from http://community.vzw.com/t5/DROID-X-by-Motorola/Minimize-Droid-X-Issues-After-Froyo-Update/m-p/29658... and then after all is completed log into Google Mail and then go to the market and select left menu button and pick downloads from the list and then you will see all pay apps that you installed and you can reinstall the apps rather quickly,

I am really hoping Droid Central information is correct on 2.2.1 update coming soon with bug fixes for 2.2. read about it here http://www.androidcentral.com/droid-x-about-get-another-update(This hasnt been verified but a nice thought.)