[galaxy-user] bwa/bowtie not running

Hi- I'm having trouble getting bwa to run on the main server. It seems stuck in the "waiting to run" state. I have tried changing the assembly to align to, and have tried re-running a previous workflow that ran fine a couple weeks ago. I even tried running bowtie, and that seems stuck. Is something wrong with the NGS server? Other NGS jobs (FastQC, filters, grooomer) seem to be fine. Thanks, Terry