I'm working with OOo 3.2.0 on ubuntu 10.04 and mysql 5.1.41

I have a macro with the following code:

Sub serienbrief_pdf
	Dim MailMerge as Object
	Dim DocumentURL as String
	Dim bodytext as String
	
	bodytext = "Hallo," & Chr(13) & Chr(13) & "blah"
	MailMerge = createunoservice("com.sun.star.text.MailMerge")
	Mailmerge.DataSourceName = "db-cn-mysql"
	
	MailMerge.CommandType = com.sun.star.sdb.CommandType.QUERY
	MailMerge.Command = "my query"
	MailMerge.DocumentURL = ConvertToUrl("/path_to_doc/mydoc.ott")
	MailMerge.OutputType = 3
	MailMerge.Subject = "my subject"
	MailMerge.MailBody=bodytext
	MailMerge.AddressFromColumn = "email"
	MailMerge.SendAsAttachment = 1
	MailMerge.AttachmentName = "file.pdf"
	MailMerge.AttachmentFilter = "writer_pdf_Export"

	MailMerge.execute(Array())
	MailMerge.Dispose()
End Sub


By executing, I do have a quite different behaviour each time. All seems to work
fine, except the creation of the PDF file. It seem, that the files got send
before the creation is finished.
Sometimes only the bold text is in the attachment, sometimes only the normal
formatted text, sometimes no text, sometimes all text.
The missing text in the PDF file is invisible, I can mark it, copy and paste it
to an editor. It seems, the Text is behind the page.

If I use the GUI to mailmerge with the same options, it is working without any
problems.