I updated to the new Lion OS for my Mac this week, only to find that my old writing program Writeitnow4 was a PowerPC program and no longer worked under the new Mac OS. So I had to order another writing program because I like how they help you keep your writing organized.  I chose Scrivener because it was well priced and I've only heard good things about it.  I did, however, have to copy and paste all of my writing, notes, research etc. which took a while.  I just have to get used to the new program now so that I can get back to my writing.

~Angel