I've been experiencing the same increase in freezing and crashing as others but ...
This has just started today. Apart from not having textures load into my edit window (which I use the workarounds for now) this is adding yet another layer of frustration to what is otherwise my most satisfying part of SL - creating objects.
I selected the files on my computer and click the Upload button - and SL freezes, popping up the Crash Reporter.
reported it, re-logged to a different region, waited untill everything had settled down, and tried again. Exact same thing happened.
reported it. Opened the viewer and emptied my cache (without logging in). Deleted SL. Re-installed SL. Relogged, waited for everything to settle down and tried Bulk Upload again. Crash & Crash Reporter.
I'm buggered if I can figure out how to put in a bug report to Jira - the instructions don't match the interface.
I'm on a MacBook Pro
Is anyone else experienceing this?