Navigating and drawing in 3d view is extremely slow. For each operation there is a 5 second delay; for example i have to hold down the pan button for five seconds before i can move, the same is for 3d-explore (once activated though, exploration goes smoothly).
I had the same problem about six months ago, but it disappeared after two or three days, for no particular reason, and worked fine until now.
My computer is a Lenovo Thinkpad Z61p:
General:
Processor: Genuine Intel CPU T2500 @ 2.00GHz
Memory : 2048 MB
Mainboard: LENOVO 94523NG
Graphics:
Video Card: ATI MOBILITY FireGL V5200
Mode: 1920x1200, 32 bit
OS:
Windows Xp - Professional (5.1.2600)