Tahoe 26.5.1 iMac. Been having an issue with images lately both from downloads and today some of my own that I airdropped from an older iMac to this one. If I try and open the image I get a prompt saying I do not have permission. Even if I try and unlock it the thing goes back to locked again. The way I have been getting around this is to do a restart and all is well for awhile till it pops up again. I probably went about 6 months or better before it first popped up about a week ago.
Any ideas?

Since updating to Tahoe my MBP has been running slower and slower with every update. I have a 2020 Intel machine, so clearly I'm running out of updates but to put in perspective just how slow is is running, I'm currently backing up using Super Duper. It's been running about 10 hours (it used to take 20 minutes before updating). It's copying between 50 and 100 MB/s.

When I open the applications folder, it takes about 2 minutes to fully populate the icons. I still have around 30% free...

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HP Printer suddenly paused on Laptop and iPad. Have tried to remove it, cleared jobs and turned everything off and back on. This is a sudden development . Both the laptop and iPad still print on my old Canon printer. Anything else I can try?