Okay, BOINC really, REALLY needs to work on aborting large amounts of units. I just tried to abort old CUDA WU that I was way behind on, and somehow, I ended up aborting hundreds of hours of work (all progress was shown as 0.000% when doing the aborting) and I STILL have those stupid CUDA units.

6.4.7, and what I did was sort by date and since only the CUDA units were late, I went up until June 6th, and started aborting them. For some reason not all of the ones I wanted to abort were aborted, and some I wanted to keep were, even though I selected only the ones I wanted. I double checked, I deleted another one on accident once so I was VERY VERY VERY careful to not screw it up.

In 6.2 and up doing actions on multiple projects or tasks is quite convenient. Hold control key and mouse click the items you want to action, your case Abort. Or, hold shift key, hit first and last in series you want to action and switch to holding ctrl key to tick individual lines you want to exclude. Then hit the Abort button. Sequentially it will start opening abort confirmation pop ups, one by one. Actions that are none destructive like suspend and resume just execute a multi line selection in one click.

I did that, but for some reason, the series goes insane part way through and starts jumping around or something! I have no idea what's going on or how it happens, but I lost I want to say around 1000 hours of work (thankfully some were in CPN) and I'm not TOO mad (I run 8 projects at once), but it's an odd bug and it doesn't make any sense.