Eicar test makes AV alert freeze

I downloaded the Eicar test virus and saved it to my desktop. As soon as it finished downloading, an AV alert popped up in the middle of my screen; however, if was completely blank. The alert has completely frozen up for a good few minutes before I could actually interact with it.

I’ve tried it again a few times now and I have been able to reproduce this bug each time.

Just an update:

This only happens if I save the file straight to my dekstop from my browser (Opera). If download the zip and extract it to my desktop, the AV alert appears instantly without any problems.

I can’t confirm when downloading the eicar.com and eicar.com.txt. Using the latest snapshot v3309 on Win 7 32 bits.