Dictation interferes with Mission Control - MC shortcuts stop working

Question

I just started using dictation about a week ago, and, although it works great, it seems to be interfering with the Mission Control shortcuts (F9, F10, etc.). The shortcuts just stop working, often after Dictation shows some stuttering (short episodes of freezing, or an inability to switch languages). They never malfunction when I don't use Dictation. After restarting the dock with osascript -e 'quit application "Dock"' everything functions normally, but it gets annoying when you have to do that 10 or more times a day. Does anybody know what's going on or maybe have a fix?
Specs:
27" iMac, late 2009
Processor  3,06 GHz Intel Core 2 Duo
Memory  12 GB 1067 MHz DDR3
OS version  OS X 10.9.1 (13B42)
I should probably also mention that I'm using enhanced dictation, and that I've loaded two languages, English and German.

Answer 1

When you next have the problem, note the exact time: hour, minute, second.
If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above. Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first. Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V).
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. In most cases, a few dozen lines are more than enough. It is never necessary or helpful to post more than about 100 lines. "The more, the better" is not the rule here.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.