I been having ploblems with Photoshop generating actions where the wheel will not stop generating

Question

I need help in why only on Mac photoshop will get stuck generating an action and be force to force quit and restart the mac and loose all unsaved work!
This issue  only happens with Mac, I have Creative suite 3 on my PC and works great but my Creative suite 4 and now the trial Photoshop CS5 Extended has the same problem.
Example:
1-If I Create a Text and make duplicate layers and select both layers then choose the 3D tool, "New Volume From Layers" the Generating wheel will get stuck rotating generating and not complete the funtion forcing me to force Quit the Mac and loosing all unsaved work.
2- If I try to edit, scale, etc the same happens with the generating wheel getting stuck! This is fustrating and Only happens with Photoshop and not Illustrator, Flash..... on the same Mac. This problem is happening to me and my student friends at Class. Thank God I have my PC and CS3  allowing me to complete assignment but CS3 doesn't have the 3D tool and now is Hell since CS4 and the trial SC5 are on my Mac!!!!!! HELPPPPPPPP Please......

Answer 1

c.pfaffenbichler   thanks for getting back to me so quickly. Here's the info that you asked about, the Content Aware that I was referring to is Content Aware Fill
GPU Preference settings
Graphic Processor Setting
Use Graphics Process: box checked on
Advanced Settings:
Use Graphics Processor to Accelerate Computation: box checked on
Use OpenGL: box unchecked (off)
Anti-alias guides and paths: box checked on
30bit display: box unchecked (off)
Drawing Mode: Advanced
ATI AMD Radeon HD 6700
History State: 50
Cache Levels: 4
Cache Tile Size: 1024
While I has experinced these issue with all of the files that I process the particular file that I'm currently workingis:
shot at f5.6, ISO 320, 300px 5184 x 3456 px, using ProPhoto RGB color space at 16bit however when trying use the Lighting Effect or filter gallery I switch to 8bit.