Alright, Microsoft, you win...this time

So, yesterday I started a 24-hour trial run using Mozilla's Thunderbird e-mail client (and Sunbird, their stand-alone calendar app). I love love love Mozilla's free Firefox web browser, but unfortunately I can't recommend Thunderbird or Sunbird, at least not the most current versions. Here's why:

• Thunderbird runs slowly overall. For example, on my usually-speedy laptop, approximately 2.5 seconds transpire between my click on "new contact" and the appearance of the new contact entry window.
• Freezes up after computer reawakens from suspend or low power mode. This is occasionally true of Firefox as well, but less of a pain in the ass to relaunch in that case.
• Asks too many damn questions.
  
• Sends e-mails individually and immediately when you click "send" after writing the e-mail. In Outlook, the e-mails queue up in the outbox until you hit "send/receive," which I like.
  
• No drag-n-drop feature as in Outlook, which allows you to drag e-mails into your calendar or into your task list. This feature is a necessity without which I cannot live happily.
• The Sunbird calendar does not let you drag appointments around willy-nilly as in Outlook, either. You have to open the appointment and type in the new start and end times. An especially bad thing for those of us who use Outlook's calendar to block out our daily schedules, which often shift around throughout the course of the day.