I am not a moderator or a guru or lq addict to answer this correctly. However, as I have found out once by browsing thru this website, I wud like to tell u that when u are browsing a forum you can find something called as My LQ. (probably right down) In that section you have a hyperlink called as 'My Threads'. Click on that and there you go...
Secondly, if u are in user control panel, u ca view your recent threads as well (if u just want to view recent ones).