pidgin crash on clicking on the accept button, icq-uin lost

I gave someone my ICQ uin to add me, and when the window popped up where it asks whether to authorize the ###-###-### uin I clicked yes which caused Pidgin to crash completly.

The actual problem is that I did not write down the ICQ uin of that person that appered in the window, and after restarting pidgin, there was no sign that pidgin "saved" the authorizing question for me.

I looked into my ~/.purple directory for any crash logs, but there were only some xml files with settings.

I use pidgin 2.5.0 from the ubuntu repos.

Pls, does anybody know how to restore the uin of the person that wanted to add me? It's important for me to know the number.