Don't know if this is an issue with windlight or somthing in SL that I just hadn't seen before.
Rezed an invisible object, did the ctrl-alt-t to find it, edited it then took it.
Then did it again and lost the object, found other invisible objects with the ctrl-alt-t but not the one I just Rezed. Could see it on the mini map.
windlight client (1.18.6 (76116) Dec 19 2007 09:35:40 (Second Life WindLight)). on Linux 2.6.21.5-smp #2 SNMP, nVidia GeForce 7600 GS/AGP/SSE2 OpenGL 2.1.1 nVidia 100.14.11. LLMozLib 1.1.0
logged out and back in with the 1.18.3 (5) linux client and could see it with the ctrl-alt-t and could take it.