  Using the Effelsberg radio telescope at 4.85GHz and 8.35 GHz we discovered
large symmetric lobes of polarized radio emission around the strongly HI
deficient Virgo cluster spiral galaxy NGC4569. These lobes extend up to 24 kpc
from the galactic disk. Our observations were complemented by 1.4 GHz continuum
emission from existing HI observations. This is the first time that such huge
radio continuum lobes are observed in a cluster spiral galaxy. The eastern lobe
seems detached and has a flat spectrum typical for in-situ cosmic ray electron
acceleration. The western lobe is diffuse and possesses vertical magnetic
fields over its whole volume. The lobes are not powered by an AGN, but probably
by a nuclear starburst producing >10^5 supernovae which occurred ~30 Myr ago.
Since the radio lobes are symmetric, they resist ram pressure due to the
galaxy's rapid motion within the intracluster medium.
