Final Cut acting weird.

Hi guys.

I'm not a pro in video editing, just a newbie enthusiast. I've completed several projects in Final Cut Pro, on the same machine I'm working now. It's a 09 Mac Pro, with 32 GB RAM, Octo 2.26.

I never experienced any flaws in the way software worked, but now it's acting weird.

I drag'n'drop audio - and I wait for 5 minutes, because FC freezes. I d'n'd a 720p IMAGE, and it freezes for 3 minutes. I press space just to listen to placed audio, and I have to wait for 2 minutes so it starts playing.

I have no clue what's wrong. Any ideas?

Thanks.

 

Thanks. Clearing cache didn't help.
Everything started working better after I deleted older event. Somewhy.

Thanks anyway!