It would appear that the microblog applet in kdeplasma-addons is limited to unsigned integer status id's. With a current adjustment by twitter status ids have topped the maximum value for unsigned integers. Reproducible: Always Steps to Reproduce: 1 Actual Results: Ability to create new tweets but not view them in the applet. Browsing via the twitter website will show all tweets.
Created attachment 205440 [details, diff] A quick search replace uint to ulong I did an quick search replace on in the applet portion of microblog and it appears to fix the issue for me.
Created attachment 205441 [details] ebuild for the above patch.
The above patch has been committed to svn by kde. See: https://bugs.kde.org/show_bug.cgi?id=207327#c6 https://bugs.kde.org/show_bug.cgi?id=207327#c7
Fixed upstream in 4.3.5 and 4.4.0