Xlib : sequence lost (0x1718e > 0x71a0) in reply to 0x0!

 Hi to all


Iam building an kde Application When  I pause the current pthread and
      invoke an dialog in another thread the following error is coming .

Xlib : unexpected async reply
Xlib :    sequence lost (0x1718e > 0x71a0) in reply to 0x0!
X Error : BadImplementation (server does not implement opertaion) 17
    Major opcode : 20
    MInor opcode : 0
    Resource id  : 0x759d1
The error is coming randomly , not always .
  Can any will help how to come out of this error .


 Thanks