Event List

Instead of increasing colspan to a total of 6, leave it as a 2 column table, but merge the daily/status cells, and in the new cell, add a 1 or 2 row, 3 column table for the daily/event/server stuff:

... |- |colspan="2"{| | Daily label | Event label | Status label |- | Daily Missions table | Current Events (preferably as plain text) | Server Status table |} ...

The way you have it now gets the job done, but it would take more work to make sure it doesn't mess with the width of the cells under it like it does in your current example, and we might have to manually resize every cell on the page again if we ever change the width of anything in that one row. The width of the events section might change if we change our minds about the necessity of listing year or start time, or if there's ever a really long event name.

Switching to the nested table idea would more effectively separate the width cells in this row from those in the next, so it would be easier to avoid what's happening in that next row right now.(I don't know how it looks for you, but Firefox is showing me a page where "General Mabinogi News" is 2x as wide as "Mabinogi Server Updates" for your example, which doesn't seem to be intentional since the source still says 50% width for both).

Edit

I was over-thinking this.

Since there's nothing above or below that needs to match the width of any of these cells, you can just break up the existing table; put daily/current/status in a 3 column table, then news/updates in a 2 column table, and just put Frontpage1 and newmenu at the top and bottom without tables.