Error when creating backup

Recently I began having issues when backing up my blogs. I have several blogs. All are having same issue. All are on same server. The issue: after iniating the backup, it stalls. The progress never exceeds 13% complete, usually stops exactly at 13%. I suppose this could be something on my database. But not really sure where to begin on this. I have had no problems for many months creating back ups, this is a recent problem that I noticed in 2.03 and continues in 2.04. Any help would greatly appreciated.