Mdworker -fan related problem

Question

Since yesterday evening i'm experiencing some problem. I've noticed it's related to mdworker running in the background constantly when i'm downloading (using torrent client transmission). Whenever i'm downloading multiple files, going up to 100 kb/s and more I've noticed mdworker rising up in my activity monitor with CPU percentages ranging from 20 to 80 %. While I know mdworker's indexing is needed for, amongst others, spotlight, it causes my fan to run wild. I've read some mdworker related topics so far and read about mdworker causing the fan to speed up (especially since 10.5.7). However, this was caused mostly due to corrupted quicktime libraries. I don't think my problem has anything to do with those. I know one solution for my problem is setting download folder in spotlight to private, but this seems to me like a last resort, mainly because I hadn't been experiencing any problems untill yesterday.

Answer 1

Strange no-one comes up with this:
Transmission causes a lot of changes to files at high speed, and Spotlight wants to catch up with those changes.
So here is the trick:
add the Transmission download directory to the Spotlight's ignore list:
System Preferences -> Spotlight -> Privacy tab -> Drag your download location to the list, or add it with the +-button.
Saves you some overheating and gives you CPU performance for better purposes.