Google apps are having some issues this morning, as several users have noted on Twitter. 

Fortunately, Gmail is still up and running, but other apps for documents, calendaring and filing are completely inaccessible. 

According to Mashable's Lance Ulanoff, this isn't the first time Google's had issues with its cloud-based services. Gmail has gone down several times and is prone to the occassional glitch. 

[via Mashable]