[gargarplex]

Biggest gripes:

N.B. "Long time" means an unpredictable value typically between 30-300 seconds

1. Terminal windows take a long time to become ready to accept input.

2. My "irb" program takes a long time to load.

3. Finder takes a long time to list files, even when there aren't many files in the directory.

4. Finder takes a long time to generate previews of files

Only perhaps related to slowness, but extremely annoying: incorrectly implemented iPhone sync leads to my conversational counterparties hearing the ringing chime well after the conversation has begun.

Thanks for the link to rEFInd.

[ggreer]

Have you tried to troubleshoot the cause of this slowness? What you describe is not normal behavior for any OS. Some aspect of your system is broken. If it's a hardware problem, installing a linux distro won't help. If it's not, installing any OS from scratch (including Yosemite) will fix it.

[prapam2]

Yosemite feels slower. I rarely encountered the loading spinner, after upgrade i see every day more then once. Its very frustrating to work.