Share your experience!
I am currently on 6.0.B.1.564, and today i got the 184 upgrade available. I am not facing any issues with the current version (apart from the battery, which i guess is a common issue with all the versions).
I just wanted to know should i even upgrade to this version or should i upgrade to ICS directly?
Will the ICS upgrade be more/less easier with/without this upgrade?
Thanks 
.564 is the most stable version, .184 is also a good but some users calim that they have wi-fi issues fortunately i didn't face any, however .184 resolves the issues raised in .162 nothing new really !! So I suggest, you better hold your horses for a couple of weeks and get ICS directly on to your device
don't upgrade, as itskiran said the .564 is the most stable version.
Even i am running is the same Build number.. And its good..
I wanted to know the best way to upgrade the phone.. The Upgrade Softwere Inbuilt App.. Can i use it to upgrade or its Only via PCC Or SUS..
And the Sony Center In Bangalore India.. They said that i would Void my waranty if i upgrade my phone and they cost about 1000-1250 INR to upgrade.. What should i do?
if you upgrade using Sony's PC companion, or update service, then it won't void your warranty. but if you upgrade with different application or root your phone it "may" void your warranty.