I found this thread while searching the interwebs in frustration. In my 15 years of using Mac's I've never had so many glitches since installing El Capitan. Of course all my existing programs turned pretty unresponsive, but this can be said it isn't Mac's problem (Creative Suite CS5). So I upgraded to CC, still issues with those.
I'm on a 27" iMac - 3.6 GHz Intel Core i5 - 8 GB 1333 MHz DDR3
OS specific update problems:
• I need to hold power button down to simply shut the computer down. It gets stuck at the black screen with the 1-color spinning wheel. I've tried many different ways of shutting down, all result in the same stalling screen. Of course when I force close with the power button I then have problems when turning on again. Suitcase Fusion 6 seems to lose it's list of activated fonts, which then takes a 1/2 hour to index or whatever it does all over again.
• Finder is a frustration. Search within finder is sketchy and have to use little tricks to get it to search. If I'm searching I can type out the entire word (file name) and nothing will come up, but if I delete one letter and type it again then I will get results (sometimes). Also finder doesn't seem to remember the location I had scrolled to when using column flow. So If I have a folder of 300 images with other folders, I click to the next folder and then need to go back, I need to scroll around and find that folder again. It used to remember the location the previous folder (view) was at.
• SPINNING WHEEL ALL THE TIME for doing any little change!!!!!
• This computer is at a business (I do design work) and every night now it drops the server connection. It never did this before, and others on Yosemite don't have this problem.
• Many of my programs that are supposed to work with El Capitan must be forced closed. When I chose to close any Adobe CC programs they crash or must be force-closed. MS Office has this problem, this has even happened to Chrome. Again, not happening on co-workers with Yosemite.
• Sidebar folders disappear. I needed to add these over and over again and finally gave up. Found a solution online to create aliases in a document folder and then drag those aliases into the sidebar and now they stay. But should I have to do such a thing? Draging folders to the sidebar should keep them there. Maybe this has to do with the Mac now dropping the server? But still the folders should remain in the sidebar.
Thats all I can remember off the top of my head but I know there were more