KDE version?...You might want to re-install BT5 and please, try to avoid KDE version upgrade, unless you know very good what you are doing and recheck the sorces.list....There are some posts about the same problem as to BT5 KDE version upgrade is concerned.
If want to upgrade to version r3 from BT5 r2, read this: http://www.backtrack-linux.org/backt...acktrack-5-r3/
As far as I know, the wiki offers an upgrade from r2 to r3 but not from r1...So my advice is to do it as the wiki states it. Either download rc2 or in such case, you better download r3.
If you want to try upgrading from r1 to r3 using the link above, do it and see what happens..It might or might not work..But defenetly you need to reinstall BT5 the way it is now.