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Thanks for pointing out Fabio.
Actually when I was developing plugin, I had kept few optional settings, hence the globalizing of $db & $lang files, but later, they were removed. I believe I drastically forgot to remodify those codes, my bad, I would make an updated release soon.
Well, I had 1.3.2 and there was also certain thing (on my localhost which I was testing) which was failing on 1.7.2 but they both worked off on 1.3.2 nicely, so I kept that jQuery. Of course, for those who already use 1.7.2 doesn't need to use 1.3.2 . And PS on the jQuery site, 1.3.2 was considered to be the stable release, hence I made the decision to use 1.3.2 in this.
Cheers.