I'm getting the dreaded "Attention required" all the time, and each time I eventually get to where events and contacts no longer sync at all.  I've even tried a hard-reset of my Motorola Q and reinstalled everything.  Same problem each time.  
My software is:
  Thunderbird 2.0.0.6
    Lightning 0.7 (build 2007102304)
    Provider for Google Calender 0.3.1
    Birthday reminder 1.0.4.2
  ActiveSync 4.5.0
  BirdieSync 1.6.3.2
  Motorola Q with .NET 2.0
I have 2 Google calendars and one local calendar, and a number of address books linked to card categories.
I have sent all of the log files mentioned here to the support email.
Any and all assistance you can provide will be much appreciated.
Stuart.