I have a intel white Macbook white and I just upgraded to Snow leopard. A few weeks after upgrade it works ok for a while then suddenly I opened my iTunes and clicked the iTunes button on the taskbar and the application quits unexpectedly. After a day it happens to each and every applications even internet browser, it only happens if I do anything with the taskbar, if i stick with the windows of it nothing will happen and some application won't even run. The dock is also not there anymore. I have been having this about a year now with no problems, until now! help me please... Macbook specs: Snow Lepoard v1.6.0 Intel core 2 duo T8300 2.4GHz 2GB DDR2 SDRAM 667 MHz Intel GMAX3100 144 MB VRAM EDIT: I have a windows vista home premium bootcamp OS which only have 1 GB of free space left. The leopards hard drive has about 20 GB left. If you guys have been having the same problem or have a solution please, i mean PLEASE POST IT AS A REPLY!!! I really need this laptop for schooL!!!!