[galaxy-user] bowtie alignment

Hello, I am trying to map my Illumina reads to the mouse genome using specific Bowtie criteria. I have transformed the fastq tags into fastq Sanger as described in the tutorials. Now i am attempting to run these tags against the genome. However, it's been more than one hour now that my job has been queued but hasn't started yet. I am wondering if there is something wrong with it, or if it is usual to wait before being able to start the mapping. Thanks for your help! Nadege