hotkeys problem

[vince]

basically when i just press l without using teh windows
key it locks my computer an i cant work out why an i am
gettting really annoyed with it

 

[Sharon F]

basically when i just press l without using teh windows
key it locks my computer an i cant work out why an i am
gettting really annoyed with it

Are other Windows key shortcuts starting up unexpectedly? Does the same
thing happen if you try a different keyboard?