adobecp-300592-3.dll

xp-sp3,ie8,nis2011,sandboxie3.62,mbam on-demand,adobe flashplayer 11.1.102.55,             while visiting hula tv sandboxed, norton download insight pops up saying the above dll is safe.  i was not trying to download anything nor was i prompted to download anything. this alert appeared out of nowhere. i've tried googling the file name but could not find any info. dl insight says file created on 12-18-2011, version#3.0.0.2.2, size 5.23mb placed in folder 64032200.  does anyone have any idea what this is?  i'm assuming since i was sandboxed this file did not get on my machine. i ran a search and couldn't find it. ran mbam and norton scans, all clean. thanks