Comment 6 for bug 268434

I have the exact same problem. I dont see why a new bug is required as the original description is correct. I will rephrase, in case there was a miscommunication:
1. Resize you desktop, for example from 1024x768 to 1400x1050. Looks great.
2. Restart computer. Login. Display back to 1024x768.
3. Open the Systems Settings > Display panel
3a. Dont do anything. The mere act of opening the display settings panel sets the display to the desired setting of 1400x1050. Looks good again, except the bottom taskbar panel is still sized as if the display was still 1024.