What steps will reproduce the problem?
1. Logging into account
2.
3.

What is the expected output? What do you see instead
Only occurs on my Shaman, my hunter is unaffected

What version of the product are you using?

4.018
Do you have an error log of what happened?
Date: 2011-02-22 08:51:11
ID: 1
Error occured in: Global
Count: 1
Message: ..\FrameXML\UIParent.lua line 1707:
   C stack overflow
Debug:
   [C]: (for generator)()
   ..\FrameXML\UIParent.lua:1707 UIParentManageFramePositions()
   ..\FrameXML\UIParent.lua:1209
      ..\FrameXML\UIParent.lua:1196
   [C]: SetAttribute()
   ..\FrameXML\UIParent.lua:1857
      ..\FrameXML\UIParent.lua:1855
   [C]: ?
   [C]: Show()
   ..\FrameXML\MultiCastActionBarFrame.lua:270 ShowMultiCastActionBar()
   ..\FrameXML\UIParent.lua:1762 UIParentManageFramePositions()
   ..\FrameXML\UIParent.lua:1209
      ..\FrameXML\UIParent.lua:1196
   [C]: SetAttribute()
   ..\FrameXML\UIParent.lua:1857
      ..\FrameXML\UIParent.lua:1855
   [C]: ?
   [C]: Show()
   ..\FrameXML\MultiCastActionBarFrame.lua:270 ShowMultiCastActionBar()
   ..\FrameXML\UIParent.lua:1762 UIParentManageFramePositions()
   ..\FrameXML\UIParent.lua:1209
      ..\FrameXML\UIParent.lua:1196
   [C]: SetAttribute()
   ..\FrameXML\UIParent.lua:1857
      ..\FrameXML\UIParent.lua:1855
   [C]: ?
   ...
   [C]: SetAttribute()
   ..\FrameXML\UIParent.lua:1857
      ..\FrameXML\UIParent.lua:1855
   [C]: ?
   [C]: Show()
   ..\FrameXML\MultiCastActionBarFrame.lua:270 ShowMultiCastActionBar()
   ..\FrameXML\UIParent.lua:1762 UIParentManageFramePositions()
   ..\FrameXML\UIParent.lua:1209
      ..\FrameXML\UIParent.lua:1196
   [C]: SetAttribute()
   ..\FrameXML\UIParent.lua:1857
      ..\FrameXML\UIParent.lua:1855
   [C]: ?
   [C]: Show()
   ..\FrameXML\MultiCastActionBarFrame.lua:270 ShowMultiCastActionBar()
   ..\FrameXML\UIParent.lua:1762 UIParentManageFramePositions()
   ..\FrameXML\UIParent.lua:1209
      ..\FrameXML\UIParent.lua:1196
   [C]: SetAttribute()
   ..\FrameXML\UIParent.lua:1857
      ..\FrameXML\UIParent.lua:1855
   [C]: ?
   [C]: Show()
   ..\FrameXML\MultiCastActionBarFrame.lua:354 MultiCastActionBarFrame_Update()
   ..\FrameXML\MultiCastActionBarFrame.lua:225
      ..\FrameXML\MultiCastActionBarFrame.lua:223
AddOns:
  Swatter, v5.9.4961 (WhackyWallaby)
  Babylonian, v5.1.DEV.130
  Configator, v5.1.DEV.278
  DebugLib, v5.1.DEV.275
  FloTotemBar, v
  GatherMate2, v1.12
  Informant, v5.9.4961 (WhackyWallaby)
  MailOpener, vv1.2.12
  ShockAndAwe, v6.11
  Stubby, v5.9.4961 (WhackyWallaby)
  Titan, v5.0.1.40000 - Revision 485
  TitanBag, v5.0.1.40000
  TitanClock, v5.0.1.40000
  TitanGold, v5.0.1.40000
  TitanLocation, v5.0.1.40000
  TitanLootType, v5.0.1.40000
  TitanPerformance, v5.0.1.40000
  TitanRepair, v5.0.1.40000
  TitanVolume, v5.0.1.40000
  TitanXP, v5.0.1.40000
  BlizRuntimeLib_enUS v4.0.6.40000 <us>
  (ck=259)

Please provide any additional information below.