Over the past few days, queries to multi.uribl.com have gotten ridiculously slow in the middle of the day.  The average response time was over 45 seconds.  If I did test queries via nslookup to 2.0.0.127.multi.uribl.com, I'd get some responses right away while others would time out entirely.

I run my own DNS servers and am not using public ones.  I tested it both from my local and off-site DNS servers with the same results.  I have a low volume mail server and am definitely not hitting 200,000 queries a day.  Later in the afternoon/evening, I can re-enable it with no problems.

Anyone else experience the same thing?