Given ouc is not a process that ships with Mac OS X it appears a third party product is causing the problem.
Searching the web suggests ouc is embedded within an application called "Mobile Partner.app".
If you have this application, please report the problem to the developers.
Manual Removal
It is always better to use the removal process provided by the developer; however, if Mobile Partner does not provide a removal tool, you might like to disable the ouc process manually.
You mention force quitting results in an immediate relaunching. This suggests the ouc process is managed by a launchd job ticket. launchd is a watchdog process that will monitor processes and relaunch any that run into trouble - such as crashing or being force quit.
Take a look in the following folders for a launchd job ticket associated with ouc:
- ~/Library/LaunchAgents
- ~/Library/LaunchDaemons
- /Library/LaunchAgents
- /Library/LaunchDaemons
The files in these folders are text files and can be read using TextEdit or a dedicated text editing tool, such as TextWrangler.
If you find a file mentioning ouc, move it out of the parent folder and restart.
As @oma mentions, if you can not find a launchd job ticket, look inside /Library/StartupItems for a folder or file containing ouc. Delete the ouc folder and restart.
Try disabling Hardware Acceleration...
Control-click the Flash application or video during playback.
From the context menu, select Settings.
The Display panel is the first panel shown.
Deselect the Enable Hardware Acceleration option, and then click Close.
Best Answer
I was encountering a 5-second lag (!) between Terminal window creation and receiving a bash prompt. (This was on a fresh install of Mavericks on which I had copied user profiles from another machine.) I removed all the *.asl files in /private/var/log/asl/ as mentioned here, and it completely solved my lag issue. Thanks.