Well, it appears that your source merit either wasn't upped to 250 a month like me, or you are just letting it expire.
Last time I checked, I had 200 per month as a source. Lately, I've managed to empty it on many days, and even got to touch my stockpile of "my own" sMerits. Getting rid of all sMerit is difficult, especially since most of the time I only give 1 Merit.
I don't let much source merit expire. Let's compare the amount of Merit we've sent:
Mine:

Yours:

The graphs show this:
Each column width is 5 days (10 pixels). "Days" start the second the first Merit was transfered, and count exactly 5*3600*24 seconds after that. It has nothing to do with calendar days in any time zone
The maximum is 100 Merit per column (2 pixels per Merit). If more than 100 Merit was transfered in a 5 day period, the top of the column gets darker.
Both graphs look quite similar.
Theymos gave me instructions to try and do my best to distribute all of it. I'm doing the best that I can; yet have already had complaints.
It seems different Merit sources have received different instructions depending on when they received them.
Can you share the link to your abuse-thread? I haven't noticed anything wrong with your meriting (but I also didn't look into it).
I really despise this statistic.
https://bitcointalk.org/index.php?action=merit;stats=topsendban Now I am on the list that appears to point out merit abuse suspects. I was originally very honored to become a merit source. But now I feel that my reputation is at stake with every single merit that I am obligated to distribute.
Not a nice list to be on

Do you know who was banned? It's "just" 29 Merit in 180 days, it's very well possible a user received 5 Merit per month from you, and got banned for plagiarism later on.