Strange glitch in my SMF cache today - Should I be worried ?

[Tanks]

Hello fellas

Today i had a wierd glitch on my site. It was sitting in the upper left corner of the screen and i was sure it was a secret message from a hacker.

It looked like this

;}?<

I failed to find any files that was modified and after some searching it hit me. I could try to clear my cache and vupti, the glitch was gone.

This has never happend before and i have had the forum for almost a year now.

Is this normal behavior or something i should worry about ?

[flapjack]

it's not a hacker, there must be some error in one of your template files. try different template to double check it.