I am having the same problem as Hooman...i'm no longer able to fetch posts with the Blogging Bundle and I get the exact same error as him saying something about times. 

As Allan suggested, I enabled server logging.  I did another Fetch Post, got the same error, and now this is in the log (I **,d out my pswd and modified my username).  This means nothing to me...any help?

2009-08-25 23:50:02  Input: <?xml version="1.0" ?><methodCall><methodName>metaWeblog.getRecentPosts</methodName><params><param><value><string>0</string></value></param><param><value><string>kelle</string></value></param><param><value><string>**pswd**</string></value></param><param><value><i4>20</i4></value></param></params></methodCall>