[jej2009]

I was wondering what directories that show up in the \application data directory are for and if they are ok to delete?

Sometimes they have files in them, sometimes they are empty.

Here are 2 examples

C:\Documents and Settings\jsmith\Local Settings\Application Data\{30D0017D-D816-49E6-9A5E-437E3C2C22A7}
C:\Documents and Settings\jsmith\Local Settings\Application Data\{7148F0A6-6813-11D6-A77B-00B0D0142070}

In one of these for example, there are 2 files
1033.mst - MST file
java2 runtime enviroment - Windows Installer Package

Is there any general rule about if directories like these can be deleted without problems? or should they always be left?

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don't delete any directories...
what are you trying to accomplish...

[happyrock]

don't delete any directories...
what are you trying to accomplish...

[jej2009]

Its mostly curiosity since all of the other directories there have names. These two are just numbers and letters. Are these possibly left over from installations that should have been cleaned up?

[happyrock]

would you open the hood of your car and start cutting wires because you don't know what they are for...
if you start poking around in areas you know nothing about you will corrupt your system

[jej2009]

Does this mean you aren't going to answer my question? It was just a question, I wqasnt expecting a sarchastic answer.

[happyrock]

go here...each of those links has info for you...