phone slow respond at various times

[Guest xero01uk]

Hey guys, sorry for the n00bish posts, but, since ive had my phone its been somewhat unresponsive, somtimes even not responding at all, and since the 6.1 update, i think its getting worse..

here the phones vitals

ROM: 3.28.405.0.WWE

Radio Version: 1.65.16.25

Memory

Storage: 119.27mb

In Use: 16.52mb

Free 102.65mb

Program: 85.32mb

In Use 35.55mb

Free: 49.77mb

Google Maps, Windows Live Search and tomtom6 are installed on my microsd card (2gb)

any idea what could be causing the slow down?