For the other mystery hangs, the last message in syslog is this:
type=1503 audit(1349642278.078:46): operation="open" pid=5234 parent=5145 profile="/usr/lib/firefox/firefox{,*[^s][^h]}" requested_mask="::rw" denied_mask="::rw" fsuid=1002 ouid=0 name="/dev/nvidiactl"
No clue why "audit" is reporting a denied(?) request by firefox to write to nvidia, and then hanging ... Hmmm don't know what to make of this.
For the other mystery hangs, the last message in syslog is this:
type=1503 audit(134964227 8.078:46) : operation="open" pid=5234 parent=5145 profile= "/usr/lib/ firefox/ firefox{ ,*[^s][ ^h]}" requested_ mask=": :rw" denied_mask="::rw" fsuid=1002 ouid=0 name="/ dev/nvidiactl"
No clue why "audit" is reporting a denied(?) request by firefox to write to nvidia, and then hanging ... Hmmm don't know what to make of this.