I need some help, so last night i was doing some editing on imovie and today when i get home from work 3/4 of what i had is now somehow gone... even the videos in the library is going... does anyone know how get this fixed?
where should i save my videos to??? i just made a folder on my desktop and saved them there, this right???
it will only let me edit one or two videos in my projects, they wont play just a black screen with the wheel thinking and thinking... has anyone seen this??

OS x 10.6.8

Model Name: iMac
Model Identifier: iMac12,2
Processor Name: Intel Core i5
Processor Speed: 2.7 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 4 GB
Boot ROM Version: IM121.0047.B1F
SMC Version (system): 1.72f2
Serial Number (system): C02FTB61DHJP
Hardware UUID: 960DEE65-868C-5CAC-BD28-BF3D9986C0D1