2 instances of limewire running

After going to magnetmix.com to check out some new vids, i start clicking on the magnet URLs to download some files, after i clicked the 3rd one, another instance of limewire started up and began taking on some of the downloads i clicked on. I thought limewire doesnt allow multiple instances? !!! WHAT IS GOING ON! im leaving both instances up for now just incase you need any info from them. they are both connected to the GnuNet as ultrapeers, but its not hurting my bandwidth at all. i have a 3mbps download connection. The second one that is up (the one that autimatically opened after clicking the 3rd link) is only connected to 25 peers all outgoing and its rating it as excellent. The first one is connected to 30 peers and 30 leaves.. incoming and outgoing mix. what is the problem here? and how is it possible for this to happen... im running winXP pro and limewire pro 4.4.1