Strange program entries in windows installer

[pete]

The PFY noticed the following when running psinfo -s \\computername against a remote machine:

 

?9?9♥☻v♀?9?9?9
?9?9:☻2♀?9?9?9
?9?99☻±♀?9?9?9
?9?99☻»♀?9?9?9
?9?9‼☻Ë♀?9?9?9
?9?95☻Ù♀?9?9?9
?9?9K☻Ñ♀?9?9?9
?9?9J☻Ç♀?9?9?9
?9?9'☻O♀?9?9?9
?9?9♥☻♀♀?9?9?9
?9?9↨☻>♀?9?9?9?
?9?9‼☻)♀?9?9?9
?9?9O☻m♀?9?9?9
?9?9↨☻l♀?9?9?9

 

Any ideas to track down what they correspond to? (nothing obviously out-of-place installed). Their presence makes me a bit twitchy, though could be down to corruption or daftness.