Hi All, Just upgraded from OXS 10.10.5 Yosemite to 10.11 El Capitain on my old Mac Pro 3.1, all went OK, but I did clone Yosemite to a spare drive, just in case, but so far everything seems to be working as before, including Diptrace which runs under WINE. Well a little better, some things seem a little faster, boot up is 2-3 seconds better at about 30 seconds. No problems with my emails or browser. I don't seems to have lost anything. Not tried the split screen yet, time will tell..... More later, regards. el.