Yeah, both.
I do not want automatic updates enabled and they gets enabled, when updating to newer program version.

At first I noticed this issue at beginning this year, do not know exact version numbers, program has never been outdated for more than 5-6 months.
Spike in CPU usage happens when automatic update is in progress (spike probably is not accurate, it is 100% CPU use for 30sec to few minutes)(computer is not very powerful, P4 3GHz and has a VERY slow main HDD (~3MB/s))